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+--- Thread: 3622xs+ storage expansion- slow RAID rebuild (/showthread.php?tid=7766)
3622xs+ storage expansion- slow RAID rebuild - Enquiries - 10-25-2022
Hi Robbie,
as always, love the show.
Recently I upgraded from the 1821+ to the 3622xs+. I got a great deal buying the unit new on ebay for $2,200 so I couldn't resist at that price point.
I was using (7) 16 TB Seagate EXOS drives in a RAID 5 array and added (2) more 16 TB Seagate EXOS drives for additional capacity and for conversion to RAID 6 to protect against 2 failed drives. Essentially I added 1 drive for expansion and 1 drive for redundancy.
The question I have is this. I am currently running the RAID conversion and expansion processes and it looks like it is going to take 4-5 days. Is the unit actually picking up and laying down each file one at a time since it has to create a second set of parity data and the stripes and block sizes will have changed since I am both expanding the volume pool and converting the RAID from RAID 5 to RAID 6.
THanks,
James.
RE: 3622xs+ storage expansion - ed - 10-25-2022
Yes, during the rebuild system will chisel all unnecessary zeros on the drive. Synology promised to stop doing this and improve rebuild speeds, but it takes a decade for Synology to deliver any of their promises. But one day
In meantime, you can choose to allocate all resources to speed up the process. Open Storage Manager /Storage Pool/Configurations and select the option to run rebuild Faster. This will slow down the system though.
I hope this helps.