Degraded Volume - Failed Disk - Questions (zfs/raidz1)

[Mike Gomon]

This is the first time I have had a drive fail since building this SAN. It's about 3 years old and a couple days back a drive appears to have failed. The drive is in UNAVAIL state and when I try to ONLINE it, "remains failed, device no longer present" so I assume it's toast. I do have the serial but I am unable to see the front of the drives, I assume in that case I will need to power down the SAN and pull drives one by one which I can do, so that is not an issue.

Some questions:

1. Is powering off the SAN and looking at each drive one by one the only way to ID the failed drive?
2. Do I have to replace the drive with a 1 for 1? Meaning, does it need to the exact same drive or can I buy a larger drive (which is cheaper at this point)?
a. If I buy a larger drive, will the pool use all of the space or only the 3TB from the original disk set?

From dmsg =
da4 at mps0 bus 0 scbus0 target 4 lun 0 da4: <ATA WDC WD3001FFSX-6 0A81> s/n WD-WMCXXXXXXXX detached GEOM_MIRROR: Device swap1: provider da4p1 disconnected. (da4:mps0:0:4:0): Periph destroyed

From status Email:
Checking status of zfs pools: NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT freenas-boot 111G 6.21G 105G - - - 5% 1.00x ONLINE - volgrp1 16.2T 13.8T 2.43T - - 26% 85% 1.00x DEGRADED /mnt volgrp2 3.62T 442G 3.19T - - 37% 11% 1.00x ONLINE /mnt volgrp3 7.25T 4.94T 2.31T - - 0% 68% 1.00x ONLINE /mnt pool: volgrp1 state: DEGRADED status: One or more devices could not be opened. Sufficient replicas exist for the pool to continue functioning in a degraded state. action: Attach the missing device and online it using 'zpool online'. see: http://illumos.org/msg/ZFS-8000-2Q scan: scrub repaired 0 in 0 days 10:48:08 with 0 errors on Sun Nov 10 10:48:13 2019 config: NAME STATE READ WRITE CKSUM volgrp1 DEGRADED 0 0 0 raidz1-0 DEGRADED 0 0 0 gptid/456156e2-f956-11e7-abc1-003048d6d386 ONLINE 0 0 0 gptid/461b1637-f956-11e7-abc1-003048d6d386 ONLINE 0 0 0 gptid/46d7d732-f956-11e7-abc1-003048d6d386 ONLINE 0 0 0 14232926012089479196 UNAVAIL 0 266 0 was /dev/gptid/479efb2d-f956-11e7-abc1-003048d6d386 gptid/48f05162-f956-11e7-abc1-003048d6d386 ONLINE 0 0 0 gptid/4a47c6b4-f956-11e7-abc1-003048d6d386 ONLINE 0 0 0 errors: No known data errors -- End of daily output --

# zpool online volgrp1 14232926012089479196
warning: device '14232926012089479196' onlined, but remains in faulted state use 'zpool replace' to replace devices that are no longer present

Thanks!

 

[danb35]

can I buy a larger drive

Yes, you can.

only the 3TB from the original disk set

Only the 3TB. If in the future you replace the rest of the disks with, say, 6TB disks, the pool will expand to use the full space of those disks once they're all replaced.

You can reasonably safely expect that da4 will be connected to the fifth SATA port, but you should still check serials to confirm.

 

[Mike Gomon]

This there is much difference between WD Enterprise Gold and Red Pro's? Enterprise Gold's are cheaper than the Red Pro's but offer the same warranty and reliability according to WD.

 

[Mike Gomon]

So has it that WD has an Advanced RMA process. 3-5 days the new drive will arrive. Thanks for your help on this!