Score:0

Add disk to QNap Raid 5

pk flag

I have a QNap TS-569 Pro configured with Raid 5 of 4 hard drives of 1 Terabyte each. It has 5 disk slots and I want to increase the size of the Raid of another Terabyte.

Reading the manual seem pretty easy operation, but I have a doubt. After adding the new hard drive to the raid, the QNap will rebuild the raid. During this time (usually it's pretty long), can I access the data? Or would it be unavailable until the synchronization process finishes?

Score:1
cz flag

You can use the RAID array while it is being reshaped, but access will be slower than normal.

amicoderozer avatar
pk flag
Ok thanks, and iScsi connections should also work right?
Michael Hampton avatar
cz flag
With the same caveat, yes.
Score:1
pk flag

I answer myself. Tested on QNap TS-569 Pro configured with Raid 5. If you add a disk to the raid, the data will be unavailable until reshape has finished. Hence make sure to do this operation on weekends or overnight.

Michael Hampton avatar
cz flag
That's quite unfortunate and unexpected. Any professional grade system should keep the array online during reshaping.
amicoderozer avatar
pk flag
@MichaelHampton I know I was really disappointed when I found out!
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