The Top 15 Reasons Your Synology is SLOW (and how to fix them)

[@lakshanthadissanayake6735]

Bought a Synology NAS recently and now your videos have helped me to learn a lot about Synology! Thank you for all the hard work! cheers!

[@geoffc7941]

Still a great video! One thing of note re: Jumbo frames. If you enable Jumbo Frames on your NAS and the rest of your LAN is not 100% Jumbo, you may experience frequent disconnects, failures to connect and outright inability to use the NAS. It can be a WHOLE LOT WORSE than just 'slowing down your network'.

[@Wesmosis]

Great video as usual SpaceRex! quick question please, I just bought 2x 2TB ‎970 EVO Plus SSDs to install them on my ds1520+, are they overkill? my usage is plex, playing media, 3 plex users, reading PDFs here and there, storing media files. Is the the size of those SSDs considered overkill? Do you still recommend RAID 0 SSD read only cache?

[@lefty0184]

Yet again very easy to follow video with good information. Keep up the good work 👏

[@SpaceRexWill]

Thanks 👍

[@SooksVI]

Very helpful video. Synology Drive was the reason for my slowdowns.

[@claudesadik]

What did you do fix this ? I believe this is also the reason for my slowdowns but still new to the NAS thing and not sure what to do. Thanks !

[@SooksVI]

@@claudesadik I recall my issue being that I was connected to my NAS through quickconnect instead of a local connection. I just had to switch over from quickconnect.

[@fzovko]

Your videos always great! I am a long time System Engineer and I learn lots from your videos. Keep up the great work bro :)

[@williamharrold-d5c]

Very useful. Helped me debug speed issues with my home setup and identify what is fixable and how.

[@gred2266]

thanks for all the great videos. I installed CrystalDiskMark, but cannot figure out how to test a NAS mapped drive. Only the local drives show in the program, and I do not understand his instructions for network drives. Could you clarif?

[@fthorsen]

Where it says C-Drive, select it and choose your NAS 👍

[@Whaever_1981]

Amazing video and channel, thank you! :) Question, I am planning to buy a 6 bay Synology NAS and don't know wether to set it up as RAID 6 or SHR-2. I will be using the NAS for storage of videos. I'm a film editor/shooter. When I'll be editing, 90% of the time it will be off-of a SSD or internal SSD drive. Would be best if I have some decent speed from the NAS for the 10% times ;)

[@SpaceRexWill]

So I would only go SHR in your case if you are not going to be buying 16/20TB drives. If you are going to be buying those large drives to start I would go with RAID6

[@Whaever_1981]

@@SpaceRexWill Ok, cool. Thx!! :D

[@Ramserik]

You are reading my mind! Was just about ask this question. Thank you!

[@Sauromalus]

I had an entirely different network-related reason. My Sonos system created a network loop on my Unifi switch-the same one that the NAS was on. It had some kind of broadcast storm that saturated the switch and dragged me down to 1MB/s. I found this out after moving the NAS to a different location and testing the speed, then returning to the original location and unplugging various things in the switch.

[@Provid]

Mine was slow because of a few reasons: - uninstall some of the apps on the synology that I'm not using (I think they are called moments but idk for sure - I think they also call them apps) - turn off the indexing programs - started freeing up space (it was almost full) Those things brought it from a crippling 5mbps to about 50MB/s. That's INSANELY different speeds. I'm on the DS220j - my other Synology with 5 drives transfers faster than 600MB/s read speeds over a 10gbs connection. And fully saturates a 2.5gbps connection (200+MB/s) since my Mac doesn't support the 10gbps usb adapter I'd bought. Fast enough to archive data for sure.

[@seb_gibbs]

Another one to add is if you have file compression enabled on the shared drive. I would not really recommend this option for anything. I currently have it enable on an archive folder, and have been moving large zip files to it, but its very slow because I'm essentially zipping and zip file, so isnt saving me any additional space while take far long to read and write to it.

[@BruceGou]

Thank you, the explanation of link aggregation solved my concern!

[@wbwright79]

all of this is great. however, it does not explain why natively the Synology streaming performance does not stack up to a 15 year old WD MyCloud simple 5400 rpm single drive unit sitting right next to it on the same network. the pointers are appreciated however, and i have learned new things. thank you!

[@MikesTropicalTech]

I'm working with Synology support on SMB file corruption but I checked and don't have multichannel enabled. thanks for bringing that up though.

[@fermento]

This is awesome. I came looking because after a major upgrade from 6.x to 7.0.1 noticed a big performance hit on the SMB share. After fixing the SMB share settings it's performing nicely again. Will be following a few other of these tips too. Thanks!

[@SpaceRexWill]

Hey glad this was helpful!

[@thephotofitz]

Thanks for the excellent videos! My write speed is only 10MBs - seems a frequent number on Google. Connected to Gigabit ethernet, wired. Even replaced the WD hard drives with Seagates. The NAS is only a DS216j but think it should be faster than that? I've logged a support ticket but not sure how responsive they are - first time doing so. Religiously checked against your 15 reasons. Stumped!

[@rabbidRUS]

I have the same thing, did you solve the problem?

[@dianewooden5160]

How do You back up your NAS? In this video at 18:00-18:30, when a single drive is "failing" by seeing that it is overworked then one should back up all data and then swap out that one drive. If all the data is critical, do you back it up to a DAS or redundant NAS that is not always on?

[@evelynyarborough1282]

Love the flamingo shirt!

[@flipdlt-pm7un]

I have the exact same that I got from Old Navy LOL

[@PeterBatah]

Thank you for sharing your time and expertise with us. Much appreciated. Have a great day / weekend.

[@SpaceRexWill]

Glad you liked it! Put down a good chunk of what I have learned the past few years!

[@thefilmpoets]

For wifi, I don't get how I can upload at 500mb/s to google drive, but my NAS is about 50mb/s ? Like what's the reason behind it?

[@SpaceRexWill]

You must be using different units. 500MB/s would be 5Gbit, not possible using WiFi. You are likely using bytes vs bits

[@entelin]

You are mostly wrong about Samba smb multichannel being "very much experimental" that used to be the case, but it is on the cusp of being considered officially stable. In fact Apple recently enabled it by default on Mac.

[@SpaceRexWill]

1) MacOS is not Linux 2) read the Samba release notes: www.samba.org/samba/history/samba-4.4.0.html “This extension should be used with care and are mainly intended for testing. See the smb.conf manual page for details. CAVEAT: While this should be working without problems mostly, there are still corner cases in the treatment of channel failures that may result in DATA CORRUPTION when these race conditions hit. It is hence NOT RECOMMENDED TO USE MULTI-CHANNEL IN PRODUCTION at this stage. This situation can be expected to improve during the life-time of the 4.4 release. Feed-back from test-setups is highly welcome.”

[@BretSnyderMusic]

SpaceRex! I really need your input. I think I might have a major issue with #14. I have 1 volume on my NAS. I initially transferred 8TB of data (videos, projects that need quick access) at 100mb/s. This worked great. For the past day, I've been trying to make a backup of my computer (and soon to be 2 other computers) and there are 400,000 files to transfer. My transfer rate is kb/s (sometimes less than a single kb/s). I think it's because a few hundred thousand files are tiny kb-to-mb sound files for music production. Should I erase everything and start over with 2 volumes? My Synology Drive initial backup is unbearably slow.

[@SpaceRexWill]

So you don't need to create two volumes. instead you can have 2 shared folders, one with drive one without

[@BretSnyderMusic]

@@SpaceRexWill I think I might already have that. I have a shared folder called "Main Storage" (where my videos and projects go), and if I transfer files right now to it, they transfer at a solid 100mb/s. Then I followed your guide on using Synology Drive and that falls under my "home" folder, and Synology Drive is where my transfers are slow as molasses (1-30kb up/down). So I think I might already have what you recommend. 😭

[@a_mouse6858]

Finally, a succinct how-to video. Thanks!

[@OttrWorks]

You answered so many of my questions in this video, been wracking my brains on 1gig/125mb speed i've been getting. Had no idea bites and bytes are different, thanks!

[@bitpickersplace494]

I have also noticed that if one is copying a bunch of small files, copy speed will be slow as opposed to copying large files. I’m guessing that the reason for this is because of the extra file processing with locating, reading and writing a bunch of files takes extra time

[@SpaceRexWill]

Ah yes that is common limitation of the SMB protocol. a way around this is multithreading with something like windows robocopy

[@andyrandy0815]

It's also a common limitation for electromagnetic and flash based media. Even SSDs delivering full Sata 3 speed of 600 Megabyte per second often can deliver less than 50 Megabyte per second when it comes to smaller file sizes!

[@gds2817]

Great tips, very thorough! Here's one that I personally had missed in my 10 Gb implementation... in PC's Device Manager, be sure to change the Network Adapter card driver in Properties/Advanced/Jumbo Packet from its default of Disabled to 9014, Doh, Doh, Doh!

[@SpaceRexWill]

haha yeah you have to do it on both sides! glad you liked it!

[@andrew2004sydney]

Great practical advice .... and it sounds like you've tested everything you're talking about.

[@YouTubeCompilations2023]

Thanks for the videos man.

[@SpaceRexWill]

Thanks for being a 'member'!

[@MarkWebbPhotography]

Great tips! So for Synology drive, should I create a new shared folder and volume to get better performance? Or just a new shared folder located on the same volume as my bulk storage? I’m using Drive to transfer my Lightroom previews between desktops and then my photos are all located within a separate folder on my RS1619xs+

[@SpaceRexWill]

You don’t need a separate volume for drive just a different shared folder. What I would say is have a shared folder for any files you do not want synced to your computer as the bulk fast storage. With your XS+ you probably will not be slowed down much either way because of the beefy CPU compared to my 1819+

[@MarkWebbPhotography]

@@SpaceRexWill thanks! I’ll give it a go and see if it changes the speed or just stays about the same. Appreciate the speedy reply!

[@benjaminleonhardi3830]

The main problem with wifi is not even throughput. With a good Asus router I get 70-80MB easily ( small apartment ) but latency. SMB especially is terribly chatty so everything feels slow if you work in folders etc. The second thing for me is a good SSD cache for anything that is iOPs bound. User interface/Plex UI/Photos etc. became orders of magnitude faster after adding an SSD read cache.

[@GuillePozzi]

Would love a video on how to setup that FAST bulk volume vs the Synology Volume.

[@johncu7007]

I’ve just recently subscribed, and have always enjoyed your videos, but THIS video really took it/things to a HIGHER ☝️ Level!! (WOW 🤯👍) I mean, I have a Ph.D. (In Technology) and you taught ME (a TON) in this video!! Again, all I can say is WOW!! 😳🤯👍 (Keep up the GREAT work!! 😂👍) BTW, I am a Teacher, and think you would be (a) GREAT Instructor. You should look 👀 in your area, for a Community (or Junior) College, and consider teaching adjunct (Part-Time). I’m sure your students would LOVE ❤️ you!! (As they would “Learn” [A LOT], like me 👍) PS - Please consider doing a Video on “How To Set Up An Email Server” (on the Synology [I think it’s called MailPlus?]).

[@SpaceRexWill]

The reason I actually got into this was tutoring in college! I always really enjoyed it and figured i would keep it going. Thanks for the kind words!

[@johncu7007]

@@SpaceRexWill No Problem 😉👍 Get back in! (To Teaching), cause you are GOOD!!😄 (Plus, you can make some good Money 💵 [on the side😊]). PS - Also, please consider creating a video one day on how to set up a email 📧 server on the Synology (there are a few, on KZbin, but most are VERY difficult to follow!) Your “Gift” (BTW) is that you are very Easy (and pleasant) to follow! 👍 (and, as an Instructor/Professor, this is a VERY difficult thing to do). Again, it’s a “Gift” 🎁 (and YOU got it😁👏) Again, keep up the Great Work! 👍

[@toneabet6252]

Thanks I mapped the network drive to windows, and my transfer speeds to my Nas went from 8MB\S to 100MB\s. Originally I was transfering through the DMS web interface, and it was very slow. Dragged and dropped file in windows to the mapped network drive, and it was just over 100MB\s. Thanks

[@SpaceRexWill]

SMB is so much faster than HTTP for file transfers

[@s.f.6846]

Another great video, thx! Very informative. Setting up my LAN to 2.5 Gbit/s Ethernet and modifying my DS918+ with a USB Ethernet adapter. Lets hope it works :)

[@tacpanda]

In my case the only limiting factor is actually my old NAS CUP. It can only handle so much of data at giving moment.

[@PNice972]

Amazing video.. You helped me get the most out of my NAS network speed

[@SpaceRexWill]

Glad I could help!

[@stephanecouvreur1377]

Thanks a lot! My DS920+ was slow, sometimes freezing during file transfers, and I couldn't figure out why. It turns out it was the SSD cache. I removed the two 128GB SSD and everything is blazing fast :)

[@EverlastingEclipses]

care to elaborate your issue and solution? i have ds920+ with 4 8tb ironwolfpro seagate hdd and running SHR. And my maximum speed of writing is about 100mb/s and average 80mb/s I connected my ds920+ to my PC using 1gbe ethernet cable. and using 1gbe wifi internet to connect. And you mentioned you removed* ssd physically from the NAS..? why would you remove it from the NAS when it is actually helping and if it is, mind explaining why?

[@Mr.Jean-Paul]

Both in this video as well as your video of installing SSD Cache, you recommend NOT to use a read/write cache, instead a read cache only. I would like to know if your maintain this recommendation for DSM 7 RC, where the write cache can also be used to cache metadata in a BTRFS, which apparently improves transfer speeds for often overwritten files like in Hyper Backup, Active Backup or Snapshots? I used a read/write cache for several years, but noticed that it is saturated (always on 100%) since the installation of DSM 7 Beta/RC. Due to your recommendation in both videos, I switched to a read only Raid 0 cache in order to check if the cache does saturate as quickly as in the first scenario. The cache is used in Volume 1 RAID 5 in a 1520+ with 4 HDDs. And thank you so much for your well explained videos.

[@SpaceRexWill]

So the reason that you see that now the catch is now saturated is they changed the way that cache works. Now by default all IO is sent to the cache (I explain it more in depth in the video on RC1 that I am posting in about 20 min lol) which means that you cache should very quickly get loaded. writing the metadata can be done a-sync therefor I still say it is better for most users to use a read only cache as you get twice the space as well as no risk of data loss. The metadata will be read from the cache as well which will speed up the overall tree, should there not be enough ram.

[@Mr.Jean-Paul]

@@SpaceRexWill Checking your video about RC1 then. I only noticed that the choice to cache metadata is not given when selecting read-only cache, but still it may be cached as you say. No worry about the RAM, I’ve got plenty of it. Pssst…not saying how much, don‘t want my warranty to expire 😉.

[@matthiaskoch1093]

Watched many of your videos - great content, thank you for providing all this information and help! Here is an interesting problem, maybe you have an idea: I got a DS1821+ with a DX517 unit. All drives are 20TB Exos. One volume of the total size in a Raid6 per unit. I narrowed down the problem to the DS level: if I copy large data files from the DS to the DX, I get ~90MB/s (80-100% utilization) on each disc (equivalent to a transfer rate of 270MB/s). I tested the sustained write speed of an individual disc before setting up the NAS, and it's around 250 MB/s. Copying data on the volume via 10 Gbe starts out at 1GB/s for a few seconds, and then drops of to 270MB/s sustained as well. Similar result copying data to the main DS, just 2x faster because more drives. Looks like there is a bottleneck with the HDDs, I am just puzzled as to what it could be (RAM is 32GB, CPU does not go over 10%, SSD cache disabled). Happy to pay the consultation fee if you're confident you have a fix...

[@SpaceRexWill]

The expansion unit only has an esata port which is around 300MB/s Total. you then have to take into account reading and writing the 2x drives of parity. The other huge one is how full they are. are they empty?

[@matthiaskoch1093]

@@SpaceRexWill Oh, that explains a lot. I thought it's 6Gb/s.... Write speed on the main unit is only around 100 GB/s per drive too though. System is brand new, the DS is empty and the DX is 35% full now. Thank you so much for replying and this quick on top!

[@devincurrie4145]

​@@SpaceRexWillHow full is too full?

[@ThunderFarter]

Thank you I didn't know you can put it in the network folder, is there any way to put passwords on folders?

[@claudesadik]

Hi ! I suspect the Synology drive enabled on the share folder to be the reason of my slowdowns but not sure how to fix this ? Thanks !

[@TradersTradingEdge]

Superb video, thanks very much!

[@dennisvanmierlo]

Great video but some extra advice on the 1Gb network would be nice 😊. I have 2 450GB SSD in my DS1520+. When creating a read-only SSD cache, do you recommend to still create it RAID 1 or as a RAID 0. Since it is read-only, I think the later will do just fine. Do you agree or do you have another advice? Lot’s of greetings, Dennis 🇳🇱

[@dennisvanmierlo]

And what about creating two separate read-only SSD caches of 450GB? For example, if one fails, the other one continues.

[@SpaceRexWill]

I would recommend setting up a RAID0 SSD read cache. This will give you the best performance, and should a drive fail the read cache will just disable, as all the data is already on the drives

[@billycrowe4501]

@@SpaceRexWill Does the same recommendation apply to video editors editing off the NAS, also curious if there will be much difference between 5400 and 7200rpm drives

[@dianewooden5160]

I have a MBP M1 and iMac M1. In another video you show file sharing betw. 2 M1 macs via TB3. I need to have a 2TB backup capability and at least 4TB of 'cold storage' of archived work. I am looking at a Synology NAS (4 bay or greater) but it looks like 10GbE or TB3 is well over $1K. My wish is to access the same files from either MBP M1 or iMac M1 so I can run jobs on either. My network is slooow 1Gb or wifi and I work in a remote area of the house compared to where the router is. My question: Can I attach a DAS to the iMac and use file sharing from the MBP to access the DAS, i.e., make the DAS into a multi-user device and thereby skip the network requirements of the NAS?; 1Gb or wifi. Re your other videos, thanks for showing all these options with IP over TB3 with Macs! If I cannot 'use a DAS' in a multi-user mode (me on 2 M1 macs), then what Synology NAS would you recommend?

[@PeterScargill]

My Synology is in the UK - download there is 80 meg, upload 20 meg. Here in Spain my download is 20 meg, uploads just 3 meg (I can make that 20/20 by switching to mobile) - what then is the most likely holdup - the broadband or the 2 mechanical 7200rpm drives on the Synology (raid). I could replace them with SSDs as I have here in Spain - but if the broadband is the bottleneck, no point. For reference I have some half-decent (but not 4K) movies on the Synoplogy and I can remotely watch them here in Spain without noticeable delays on our 4K TV. My Synology DS214+ is old but not THAT old...

[@apriljosephphotography9439]

Hello! I have set up my first synology with the help of your videos, thank you! I have a question. I am moving about 1000 raw photos from SD card plugged into my imac. I am using 1gig ethernet gettiing around 100mbs speed. When I select all the photos on the card and copy/paste onto my NAS it "prepares" the files forever! Seemingly endless, but when I copy the folder the files are in and past it onto the NAS it starts copying/writing immediately. Any ideas?

[@wakkiephone]

I have a question: when I use my windows Laptop or my android phone and I download a file from my synology NAS over WiFi it downloads on 40-60 mbps but with same network and everything same on my iOS devices the download speed is significantly slow. Why is it and how can I fix it? Thank you I would appreciate your help in this

[@pigface999]

Hi. Is it safe and or good for my Synology 920+ to be shut down during the night and sometimes for 30 days at a time while away? Many thanks for your great videos.

[@SpaceRexWill]

That is totally safe. I would just recommend having the disks spin up at least once every 6 months so they don’t lock up but 30 days is totally fine. (The disks locking up would be still really rare, more of just good practice)

[@pigface999]

@@SpaceRexWill Awesome. Thanks so much for the advice.

[@donaldwilliams6821]

Have you seen performance issues after upgrading to DSM 7? I have DS1817+ 8G RAM 8x10TB drives. After upgrade it worked fine then started to slow down. Just getting a list of files was horribly slow. CPU load low, plenty of RAM, if I reboot the NAS, performance is restored every time. I can transfer 100MB/sec on large files all day. Using rsync I can compare large directories no problem. Then it will later a day or so at most, slow down where comparing two directories goes from seconds to many minutes.

[@glyph_official]

Disabling signing and encryption shouldn't make a big difference to performance, but it *does* make a big difference to security. Seriously consider whether your entire network is perfectly specure before you do this, and even then, *never* enable it on a laptop, which might automatically try connecting to your Synology when it's on other networks, and attackers can take advantage of that if you're not usually requiring encryption! Note that the risk is that some malicious server will *impersonate* your Synology on the local network; this risk is regardless of whether the Synology is internet-accessible or not.

[@SpaceRexWill]

Now in theory this is possible, but would require the attacker to know a ton about your Synology though could technically be possible, if you decided to try to mount your NAS when you were on a network that could not connect to your NAS, but as long as you don't do that its not going to have any issues. (unless someone breaks into your house) Also it makes a massive performance impact. MacOS used to have it enabled by default, but because of the horrible performance

[@glyph_official]

@@SpaceRexWill what would they need to know about your synology? My understanding of the attack vector is that somebody just needs to make a firesheep-esque tool to scrape networks for local domain DNS/WINS requests that look fileshare-like (.local suffixes, etc), send dns responses, and run an smb listener that now has victims connecting clients to it from privileged daemons that live halfway inside the kernel and have memory-unsafe implementations. A veritable smorgasbord of potential vulnerabilities. Granted, the real problem here is configuring clients to be resilient to downgrade attacks more than it is simply to configure servers to *allow* encryption and signing, but that’s putting the cart before the horse. The main reason this attack isn’t particularly popular today is that relatively few people use NASes at all, or travel to public wifi with devices configured to connect to them, but if it were to become popular (or if you’re a likely target of a spear attack) the tools are not that hard to build

[@Highcastle_of_Tone]

My Synology is 10G capable, but I need to upgrade my switch and then get adapters for my computers, which is more than I want to spend right now. Right now I'm getting about 108-110 MB/S.

[@frenchpressfinance]

I saw his Blackmagic numbers and at first I was like "WTH??" but then I realized he must be on a 10G network :-D

[@danieldesrochers8871]

Great video! I've checked every setting but still having a strange issue. Write speed OK (106 MBs) but my Read speed is stuck at around 12.6 MBs. I've tried both my Mac and PC and restarting my Network, Synology and computers. Same results. I am on DSM 7.2 and have a Read-Only SSD cache. I was doing the speed test with BlackMagic on my Mac. I also tried with a 1 GB test file on my PC and got the same results. Any idea on what could be the cause of this slow read performance ? (no problem on write)

[@FreestylerAlbert]

The most important thing is not in the video. Use freakin Windows Explorer instead of anything else so the creation of small files and folder is like 4x faster!!! For some reason there is still an SMB flaw after ~3 years someone discovered this bug. REDDIT: """""""""" For the 128kB file test these were the numbers I got using !Windows Explorer's! copy: DNS, on domain: 5.7 files/sec at 720 kB/sec IP, on domain: 31.2 files/sec at 4 MB/sec IP, standalone: 38.0 files/sec at 4.9 MB/sec For a single 4GB file I was able to get 112 MB/sec in all cases """"""""""""""""""" Plenty of people verified the speed gain but noone really know what is the exact flaw.

[@SpaceRexWill]

The DNS is a really weird issue as windows should be caching DNS requests so it should not take any time. Small file creation / operations have always been slow on SMB compared to NFS, but the DNS is wild to me!

[@ms7165]

Will, I have my Eero connecting to a NETGEAR 8-Port Gigabit Ethernet Unmanaged Switch (GS108) that then goes to my NAS and feeds the 2nd and 3rd Eero. Both of those routers are connected to NETGEAR 5-Port Gigabit Ethernet Unmanaged Switch (GS305) that feed my smarthome closet which contains my various hubs and the other feeds a TV, Roku and Firestick. My question is are these Gigabit hubs sufficient for heavy home use (and the NAS) or is this slowing everything down? Would it make sense (practically and financially) to upgrade the 1st switch to something like this: NETGEAR 10-Port Gigabit/10G Ethernet Unmanaged Switch (GS110MX)?

[@elkc4298]

can you touch on encrypted drives being slow? If I want speed, should I remove encryption? is it possible?

[@TealBlue1]

Awesome video. It will be my reference going forward. I have a Synology DS1821+ with 7 drives (4x14TB + 3x10TB)). I am on a 1Gb network and want to move to 10Gbe so I tried CristalDiskMark on my mapped network drive but i am getting about 115 MB read/write. 115 MB being very close to the 1Gb network bandwidth, i was wondering if CristalDiskMark is also limited by the network speed when benchmarking a mapped drive. If so, how can i know the speed of the NAS independent of the network before i upgrade my network to 10Gbe? Thanks.

[@SpaceRexWill]

Crystal disk benchmark shows your computers throughput to the NAS (limited to 1 GbE) Don’t know of any basic speed tests for a volume that do not involve SSH on synology

[@TealBlue1]

@@SpaceRexWill Thank you

[@PrimalNaCl]

How does testing drive perf on a _network_ shared fs give anyone any sense of the baseline performance of the synology itself? To do what you claim should be the starting point (baseline nas perf), enable ssh, ssh into the thing, and get fio running. That removes the network component and yields true best-case hw perf #s. For network, install docker and get an iperf3 container running. Get iperf3 installed on whatever device that's not so anemic that it can't saturate its NIC hardware. Then run that against the synology. Both as sender and as receiver. Tune e2e network as appropriate; mtu being most convenient/easiest. If you can't be bothered with the iperf stuff at least initially, at least enable the dhcp server on the synology (use different network block from existing), locate the synology close to a machine from which this smb disk testing should occur, and direct connect the two; no switches/routers in between. That should at least eliminate most net issues. it's still crap as a "baseline synology hardware perf" test though.

[@SpaceRexWill]

For ultra advanced users yeah it’s great to do all of this testing. But for your average user it’s wayyy overkill and going to be too hard to setup. That’s why I focus on what makes a NAS feel slow or fast, and for 90% of users, that is how quickly large files are transferred over the network. To the average end user it doesn’t matter if fio says it can perform 25kiops and sequential reads at 5 GB/s if they are over a 1 gig connection

[@tommyjakobsen5504]

What NAS does have that CHIP for ensription.. My DS2015XS is 7days to build 3GBx6 in SHR2

[@vincida5165]

Amazingly useful video. Thanks

[@dirk-jankraan3266]

Great Synology videos'. Thank you.

[@schumanncombo]

hey SpaceRex, hoping you can help me out as i am lost after several weeks not can figure out ... : I have a Synology NAS with an aditional 10Gbe card what is connected directly to my Macs 10Gbe and configured as recommendet in a different subnet, jumbo frames, yada yada ... My Mac sometimes still prefer to use the slow WLAN > Router > Switch > NAS Route ... I have prioritized my macs network connections to use 10gbe first. i have connected via smb network drive with the ip of the fast card. but still not working all the time. Any informations where to read / how to fix this , without turn of wlan before copy stuff ?

[@jamesgarnham4562]

Amazing video! Thanks.

[@MrDeslow89]

Hi bro. I'm using synology ds224?, Through local network I can reach 80-100MB/s transfer rate easily, but if I use different network with the speed of 1gbps, it works at 3-4MB/s ony. So strange. Do you have any advise how to Increase the downalod speed from the Nas if I'm using on difference network?

[@sup2069]

Number 6 did it for me, somehow Synology reverted minimun back to SMB1. Thanks!

[@Pabula]

Your video is great, i only have one disagreement with you. Write caches are not bad at all, in terms of speeding your synology, you simply have to chose a proper NVME, not all NVME that are TLC + SLC/CACHE based will drop below 1000 mb/s, in fact there lots of that will sustain 1k mb/s, Seagate Ironwolf 525 PCIe 4.0 / 510 PCIe 3.0 will be ideal candidate, that are TLC with SLC cache that can sustain over 1000mb/s post SLC cache exhaustion. Hell, even if you want to go into consumer grade ssds, the Samsung 970 Evo plus can sustain 1,700 mb/s after its hybrid cache is saturated.

[@SpaceRexWill]

While this is completely true, I have personally seen this with my own eyes which is why I put it in the video. Will not happen to everyone, but could happen in some cases

[@ruddyteck]

In a company with a DS1621+ using 8TB drives all 6 bays, which Raid would you think give you the faster performance on a 1gb network? , the total data is not more than 2Tb. and what should be the transfer read and write speed on the proposed raid?

[@SpaceRexWill]

RAID5 should be fine if you have a good backup. RAID5 will also give you the fastest speeds. If you are on a 1GbE connection your read / write speeds will be 120 MB/s

[@ruddyteck]

@@SpaceRexWill thank you!

[@rdagger]

I tried all you advice and still slow speeds. I then realized the slow speeds only occurred when copying large quantities of small files to and from Windows desktops or servers to the Synology (my most common task. I disabled Windows Defender and the copy time went from 1 day to 19 minutes. Any ideas on how to keep Windows Defender and maintain copy performance?

[@SpaceRexWill]

If windows defender is scanning every tiny file then your best bet might be to at least multi thread it with robo copy

[@rdagger]

@@SpaceRexWill Thanks for the quick reply! The strange thing is I have an older RS814+ on a similar network that has no slowdowns with small files. I’m talking unbearably slow on the newer DS918+ (around 20 KB/s). Also the newer NAS was working correctly for a couple of years. The slowdown is a recent problem.

[@rdagger]

Also I can copy the same small files to a Windows 2019 domain server and there are no speed issues.

[@TSSC]

Thanks for the TOC

[@randi787]

Hello thank you for your great videos. I’ve learned a lot! My problem is that after downloading only movies and TV shows on my new Synology NAS 7.0 for Plex my indexing status won’t stop nor do the numbers (1 million) decrease over time. I can’t find any indexed files. I have 4 drives (8 TB each) all in volume 1 and have used up 7.6 TB. I’m using the recommended Ironwolf drives using SHR. Everything looks great and no problems listed. This indexing has been going on for days. Please help me fix this before I pull out all my hair!

[@BerserkeR_031]

I see desktop motherboards coming on the market with 1x 10gbit and 1x 2.5gbit. Could I then enable jumbo frames 9k on the 10gbit port and just leave the 2.5gbit port default? And another question what if everything is plugged into a switch and the 2.5gbit line also discovers the NAS will data go the wrong way? How to make sure to have the NAS in the LAN network but not go back over the 2.5gbit connection @ the desktop side.

[@SpaceRexWill]

So yes you should be able to do this (assuming the motherboard is not cheating out or doing anything weird). If you wanted to make sure that the traffic never went down the 2.5 gig network for the NAS you would want to put it on a different subnet. That way you can ensure that the NAS is only ever routed through the 10GbE port as its only on that network

[@CosminRotaru]

I have a 12 minutes video that i can download from my Synology Nas to my iphone in about 4 minutes. And then i can play it on my iphone no issues. If instead i try to play it directly from the Nas out cannot keep up. I get a really choppy video. Same happens if I want to play it on tv. Why? Is the Nas transcoding on the fly? Can i stop that? Thanks!

[@SpaceRexWill]

Depending on the app you are using its almost certainly trying to transcode.

[@CosminRotaru]

@@SpaceRexWill yes, i can see the increased cpu activity on the nas when watching the video compared to copying it. But i know my phone can decode it with no issues (with the same player) when i have the file on the phone. So it should not try and transcode. And i see no option to disable transcoding on the nas.

[@chestssj4]

I am over wifi, and used to get 20MB/s which was quite enough for me, but recently my speed downgraded to 2MB/s which is too slow. I have PC and the drive mounted as SMB. I have SMB2 setup as minimum in Synology DS920+. FTP goes at the same speed. I already tried to tweak it but it is not constant (very few times the speed goes to 20MB/s from nowhere). In my old DS218j, I used to have the same 20MB/s speed. I just do not know why this is not working anymore. Any tip, as the issue seems to have changed with no change in the network?

[@ronnierush9379]

Great Video with great Information. Thank You very much :-)

[@Mike_v_E]

I have trouble playing 4k MKV files in Plex on my Nvidia Shield when I upload a file to my Synology DS920+. My setup is as follows: Synology (Plex Server) - Nvidia Shield (Plex Client) - PC (how I transfer files to Synology with SMB or NFS) are all connected to a switch via CAT6 ethernet cable. Is it normal behavior that files in Plex have an infinite loading screen if I am simultaniously uploading from my PC to the Synology? Also, will link aggregation from Synology to the switch help in this situation?

[@petruhe]

So thank you!!! Im in shock. Disable write cache make my nas working great. And bonus is one more bay free. And one small ssd fore sale))

[@Texacate]

i've noticed on MacOS, drag and drop from Finder to a Synology File Station folder via Synology web GUI is 100x slower than other transfer methods. Makes no sense why this is so throttled.

[@gianthairypanda]

The latest CrystalDiskInfo doesn't scan for and detect SMB mapped drives. Otherwise, great video! Thank you.

[@LoganDec01]

New your helps please. I have brand new Synology 923+. Purpose: 4K movies files storage. Issue is.. all my files are lagging when they are being played. If I play them directly from the hard drive from my media player, there was no issues. In the end, my NAS is obsolete. Is there anyway I can fix this?

[@AdamKarlsson]

Hey. What if I have my NAS in my main home office but want to reach the files when I'm working abroad in a different country. Would that be any issues or is it easy to setup? Would it still work good with a NAS or would you prefer any other solutions?

[@SpaceRexWill]

Going from another country you will notice some slowdown due to latency of going that far, but this is a really common solution and for documents / smaller images you would hardly notice

[@AdamKarlsson]

@@SpaceRexWill Alright. I work with 3D, sometimes it could be heavier files like for example uploading 10GB to the NAS. And for me speed matters to be able to access files quick. But it is easy to access and connect to the NAS from abroad right? Shouldn't be any issues right. What can I do to make the speed the best from abroad to my office where my NAS is located. Without mentioning the internet/wifi of course. Thanks for such a fast response.

[@AdamKarlsson]

Maybe I can use a USB WiFi Adapters to my laptop to make it quicker.

[@urbanelemental3308]

This is excellent advice. Thank you!

[@paule164]

Hi, great video. I have a synology Ds720+, 2 * 8Tb, Dsm 7 shr mirror, 2.5GBe networking. When reading 30GB from Nas it only reads from Disk 2 at about 160MB/s. Disk 1 has just been upgraded 5tb to 8tb. Does it not read from both or is there a problem. Any help would be much appreciated, cheers Paul

[@wimvandervelde1774]

Looking to buy a DS 720+. Did you use RAID 1 and how much Write speed do you get (And with what drives) ? Looking to get 2x8TB (5400 or 7200RPM) disks. Btw how are you getting 2.5Gbps Network (It has 2x1Gbps)?

[@paule164]

@@wimvandervelde1774 . Hi. With hindsight . I should have bought a 4 bay NAS, 10Gb ethernet. The DS720+ works well but the bottlenecks of only reading from 1 disk ( using both Shr an Raid1) this means that the maximum read/write speed of about 180Mb, you could use SSD for much faster access. 1Gb ethernet is limited to about 120MB maximum speed, you could try a USB Ethernet adapter. I hope this helps. Cheers Paul

[@Table-Top]

I have a SQL server (Win10) desktop on my Synology network. Its suddenly become extremely slow. I think it was a DSM update done a couple of weeks ago. Any ideas on what direction I can look at to solve this slowness issue ?

[@justme-zp4bq]

thx for this tutorial! i have an asustor nas but the solutions apply anyway. got my read/write speed from a constant 70MB/s to the full potential on 10GBe just by some small changes in smb protocol. :-)

[@SpaceRexWill]

Awesome!

[@tulsidahya]

Hello , why there are delay to play a video in iOS when Cellular network ?

[@BoraHorzaGobuchul]

This video is 2y old, is smb multichannel workable today?

[@JohnHendricks-ee7iw]

great work!

[@727jetjumper]

The reason this thread exists should be a huge flag to Synology that they need to up their game. It shouldn't take me over 3 days to transfer some petty files (still trying, things were faster on 14.4k dialup), and the on-line help they have doesn't match what's shown in the AP. Hopefully I'll find some help in this video.

[@VanThomasWebb]

I don’t think mounted shares are bind to actual connection type, means it doesn’t matter if you connect share on WiFi and connect the network cable after

[@SpaceRexWill]

In my experience it does happen

[@igobyandrew]

I'm just trying to transfer files from the NAS to an SSD plugged into the USB port on the front of my Synology. It freezes up around 40% and doesnt progress. Why is this happening? I even have two 2tb m.2 drives in there for cache. Something is off and I can't figure out what it is. :(

[@igobyandrew]

I'll also note that the SSD is a 2tb m.2 drive in a housing that is formatted in NTFS and empty. I've also tried to a G-Drive and thats having the same results.

[@jagatpavasia]

I have just buy synology DS1621+ with 10G pci-e card. I want maximum write and read speed. So, which 3.5" hard drive or 2.5" ssd should i buy. I want 700-800 MB/s read and 900-1000MB/s read speed. And also tell me that which RAID method should i used. (I will install 6 drive in this 1621+). So, sir, please suggest me as soon as you read. I am waiting for your reply

[@SpaceRexWill]

For that consistently you would want SSDs most likely. I would do RAID 5 with these if it works for you space wise: amzn.to/3RdoaER (this is what I use)

[@jagatpavasia]

@@SpaceRexWill thank you so much.... and i have tplink managed switch tl-sg3428x, so can i bond 4 port of 1gbps to combine 4gbps link with LACP ? I tried it, but only one port speed i get, pls help me if you can do

[@HenkvanHoek]

LOL, in my case it was a network cable which was causing many retransmissions. Stil a good video to start with.

[@aarhynandro5884]

Awesome info

[@benjhaisch]

Ummm wow, those speeds from your baseline are 10x what I’m getting out of my 918+… looks like I’ll be taking notes…

[@SpaceRexWill]

It’s likely due to your 1 GbE port

[@petruhe]

Synology drive is still slow with thousands of small files. Resilio 100x times faster. Something wrong with drive code.

[@josharmour]

Crap, I think all my 8tb drives are all SMR drives :(. ST8000DM004 is what DSM is showing for each of them.. Any thing I can do to avoid the issues that SMR drives have?

[@SpaceRexWill]

1) contract your manufacturer and see if they will give you CMR drives. 2) keep the volume below 50% utilization 3) do regular defragmentations 4) get a read write NVMe ssd cache

[@VanThomasWebb]

Another one - sorry - in converting bits to bytes you’ve forget control bits and checksums (to be precise) so even your calculated speed 125MB/s is not right and I think the more realistic number is about 100MB/s

[@SpaceRexWill]

Well there is a slight overhead so that’s why I normally call it 120 and have seen 120

[@michaelrobinson9643]

10GBase-T setup for me using intel x550 on my windows PC and same on my DS3615xs. With 9 SATA disks and using an SSD as source on my PC I cap out at 650-750MB/s.

[@SpaceRexWill]

The SSD source at your computer might actually be the bottleneck if it is SATA

[@dozog]

SMB/1 is a lot slower than it's preceding versions??