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RAID-5 vs RAID-6 rebuild speed
I have been upgrading disks in my various ReadyNAS units. The 4 bay units are RAID-5 and the 6 bay units are RAID-6. I haven't really seen it discussed here, so I thought I would point out that if you're using RAID-6, the rebuild times are going to be a lot longer than if you're used to RAID-5, due to having to generate the additional parity. For example, I have my RN204 and one of my RN316's. Both are using 7200 RPM drives. Both are going from 4TB to 10TB drives. Both are using FlexRAID. The rebuild speed on the RN204 using RAID-5 is about 95MB/s, whereas the RN316's using RAID-6 is about 30MB/s. I was surprised that the RN316 with its 2 core/4 thread Atom CPU was that much slower than the little dual core ARM in the RN204. I figured that it would be more linear. But, If I remember correctly, my RN516 with its 8 core 2.4GHz Xeon and 16GB of memory was also about 30MB/s using the same 7200RPM drives, it's possible that ReadyNAS OS is artificially limiting the rebuild speed (providing my memory is indeed correct). So nothing earth shattering here, just something I found interesting and thought I'd share.
"Cannot copy - file path too long" NV+
Hi all, again! I have now, so far, no problem to transfer smaller files in large quantities (like mp3's etc), it work flawlessly even over my wireless network. I have a media player (Tvix M-7000A) which is also now connected to the NV+ and it plays movies and music like a dream! (everything through my router Netgear WNR3500 and a D-link DWA-547 wireless NIC on my PC) BUT - as soon as I try to copy a movie file (like 4,5 gb) over to the NV+ it always starts really good, the speed is high....but after just a few minutes I receive the error message: "Cannot copy - file path too long".....and the file names is NOT too long. I've understood that this has to do with the communication between my PC (with XP) and the NV+....correct? My setting is now (in NV+): "auto-negotiation" and MTU 1500...I have tried all kind of settings, but it doesn't help (when I change, I receive the same error when transferring the mp3's etc as well) I followed a tip received earlier to transfer my movie files via USB (through backup function in NV+) - ok, no problem, but it took 2 days to complete the copy (1TB). I really want to avoid running back and forth with a USB drive to transfer files to my NV+, it seems very stone age in my opinion! So, this is my last issue that I really hope to solve...any ideas?
EDA500 gone, now all shares on main NAS don't appear
I had two EDA500s connected to my 316. They both messed up, at the same time resulting in data loss. Now......... in Windows Explorer, I have always seen the old shares names appear in the list. Today I tried to delete the EDA500 and the result was: No shares except for one now shows up in Windows Explorer. Even ones on the main NAS that are folders in /data. There are about 5 shares in /data/ that SHOULD be appearing. If I do ls on /data, they are there. In the UI, there are no shares at all whatsoever. So I am guessing something is out of whack with the smb config. What can I do to f ix this?Ready Nas 516 drive sleep issues with readynasd
Hi Im a new Readynas user, just as they are retired and because my work decided to throw the 516 unit out with 5x 2TB drives included because they didn’t have the required support going forward. It’s already been through a multitude of wipes, resets etc to ensure there was no data included then been upgraded to the latest os. I have setup the options within the web ui to enable drive sleep, I have a few shares all with no access (no smb, ftp anything), the only enabled service is ssh as everything I use connects over this to the shares, all shares do have copy on write but don’t have defrag. I have disabled clamav, disabled the swap partition via systemctl mask, changed journaling to storage=none, moved /var/log /var/tmp /var/cache /var/readynasd /var/backups to tmpfs with startup and shutdown scripts, upped the vfs_cache_pressure dirty_ratio dirty_background_ratio to increase io caching in memory, stopped smb service all to reduce io activity in iotop and lsof which has reduced a lot but the drives still read about 450kb every other minute. The only thing that stops this is if I stop the readynasd service which is fine as I don’t need web interface once setup correctly but does mean I lose the temperature display on the front and maybe it’s shutdown on drive failure etc. is there anything else I should look at to what this service is doing with the drives, the best I can see in iotop is it’s something to do with enclosure monitor. ThanksReadyNAS Data migration stuck
I have a 3220 running OS 6.10.7 in one of the offices. It has an SSD tier and then harddrive tier. I noticed that it has been stuck saying the status of "Data migration in progress 23%" for a week. It doesn't make progress, it doesn't seem to be doing anything on the performance page, and it doesn't reset when I restart the server. Any suggestions?
