- 5
- 2
- NAS
- RS2211+
- Operating system
- Windows
- Mobile operating system
- Android
Hello everyone and thanks for having me.
I've already posted this question on the official forum but it already got buried under a ton of new - also unanswered - questions, so I hope this attemt here is a little more fruitful.
Even though this might come off as a pretty noob question, I'm not exactly new on Synology's and competitive products given the fact that I've set up a couple dozens of 2 to 6-bay (so, RAID1, 5 or 6) stations for clients.
So, I got a pretty sweet deal on a used RackStation RS2211+ including a couple of drives and I've been setting up this thing for the past couple of days (more like weeks now). I threw in seven 2TB and two 4TB drives, went for a SHR-2 array and the consistency check ran for a whole week or so.
The thing that I noticed was that during all the time the consistency check ran only disk #5 was blinking and constantly shows usage and only sometimes the other 8 disks show usage. The same thing also shows in the resource monitor.
After it had finished it's consistency check and showed me 12.7TB of usageable storage capacity, I happily started copying over my files to the NAS with gigabit speed. Now, after every couple of transferred gigabytes the file transfer comes to a complete halt and resumes after one or two minutes. During this time no file access to the NAS is possible, even though the DSM-web-interface works fine. I've tried Windows-Explorer, Robocopy, Total Commander, it's all the same. It has nothing to do with SMB, because I've also tried FTP and it's the same strange phenomenon. I've troubleshooted this also on different machines over network differerent switches and all that fun stuff. This also occures while reading from the NAS, which makes this strange misbehaviour even more irritating. There's no encryption going on as well.
The resource monitor shows that every time the file transfer pauses, disk usage of drive #5 is pegged at a 100% until it's done with whatever it's doing and the transfer resumes with full gigabit-speed.
So, my question is: is there any way for me to find out what exactly the NAS is reading or writing to or from drive #5 at that particular moment?
The drive is a known good drive with no S.M.A.R.T. hickups or any other stuff showing up. If push comes to shove I'll have to just replace the drive and see what happens.
As far as I know, the RackStation only supports ext4 filesytstem so I don't think it has something to do with scrubbing or defragging.
When files are transferred the
And yes, I'm well aware it's an old NAS and only has a dual-core Atom with 3GB of RAM, but seriously?
Also I've never experienced performance issues like this on any of my client's DiskStations.
When the file transfer is running normally it shows an even usage of all the drives while drive #5 is at about 80% usage and the md2_raid6 task shows about 15-25% usage in the resource manager and on SSH with the top command.
But every minute or so, Drive #5 goes nuts at 100% usage while the other drives show 0% and the network transfer stops completely.
And does anyone know the maximal drive size this RackStation will accept? 4TB drives were not a even thing when the RS2211+ came out, but they work fine, so is there a chance it will take 10-14TB drives as well?
Any hints in the right direction are highly appreciated!
I've already posted this question on the official forum but it already got buried under a ton of new - also unanswered - questions, so I hope this attemt here is a little more fruitful.
Even though this might come off as a pretty noob question, I'm not exactly new on Synology's and competitive products given the fact that I've set up a couple dozens of 2 to 6-bay (so, RAID1, 5 or 6) stations for clients.
So, I got a pretty sweet deal on a used RackStation RS2211+ including a couple of drives and I've been setting up this thing for the past couple of days (more like weeks now). I threw in seven 2TB and two 4TB drives, went for a SHR-2 array and the consistency check ran for a whole week or so.
The thing that I noticed was that during all the time the consistency check ran only disk #5 was blinking and constantly shows usage and only sometimes the other 8 disks show usage. The same thing also shows in the resource monitor.
After it had finished it's consistency check and showed me 12.7TB of usageable storage capacity, I happily started copying over my files to the NAS with gigabit speed. Now, after every couple of transferred gigabytes the file transfer comes to a complete halt and resumes after one or two minutes. During this time no file access to the NAS is possible, even though the DSM-web-interface works fine. I've tried Windows-Explorer, Robocopy, Total Commander, it's all the same. It has nothing to do with SMB, because I've also tried FTP and it's the same strange phenomenon. I've troubleshooted this also on different machines over network differerent switches and all that fun stuff. This also occures while reading from the NAS, which makes this strange misbehaviour even more irritating. There's no encryption going on as well.
The resource monitor shows that every time the file transfer pauses, disk usage of drive #5 is pegged at a 100% until it's done with whatever it's doing and the transfer resumes with full gigabit-speed.
So, my question is: is there any way for me to find out what exactly the NAS is reading or writing to or from drive #5 at that particular moment?
The drive is a known good drive with no S.M.A.R.T. hickups or any other stuff showing up. If push comes to shove I'll have to just replace the drive and see what happens.
As far as I know, the RackStation only supports ext4 filesytstem so I don't think it has something to do with scrubbing or defragging.
When files are transferred the
And yes, I'm well aware it's an old NAS and only has a dual-core Atom with 3GB of RAM, but seriously?
Also I've never experienced performance issues like this on any of my client's DiskStations.
When the file transfer is running normally it shows an even usage of all the drives while drive #5 is at about 80% usage and the md2_raid6 task shows about 15-25% usage in the resource manager and on SSH with the top command.
But every minute or so, Drive #5 goes nuts at 100% usage while the other drives show 0% and the network transfer stops completely.
And does anyone know the maximal drive size this RackStation will accept? 4TB drives were not a even thing when the RS2211+ came out, but they work fine, so is there a chance it will take 10-14TB drives as well?
Any hints in the right direction are highly appreciated!