- Posts: 40
- Liked: 5 times
- Joined: Dec 04, 2013 8:13 am
- Full Name: Andreas Holzhammer
Based on Toms and Lucas suggestions I tried to change the chunk/stripe size from the default 64KB to 512KB on command line on some spare disks. This is not supported by Synology!
I had to shrink the raid first to get it to a multiple of 512KB and then ran the conversion via mdadm. This should take ~5 days on a three 4TB disk raid 5!
Unfortunately the device crashed for a different reason after one day. On reboot the raid I was trying to resize was completely gone, no configuration remained of it! I guess the Synology tracks the raid configuration in it's database and dropped the raid when it detected the mismatch I created on the commandline.
Shrinking the existing raid array is not an option, and changing the chunk size proved to be a risk to the array itself, so I have stopped my tests at that stage.
I will put in an enhancement request to Synology, but right now they seem to mainly target the SOHO market.
Thanks for all your help!
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