SOLVED Need imediate input regarding drive replacement

[phil-k]

Hello,

A NAS within the company has a failed drive. Ive reviewed documentation on replacement and it certainly seems easy enough. The issue I have is that the zpool is sort of an odd configuration that I would not expect and im not sure which path I should take on replacement.

Code:

redacted@redacted:~ # zpool status
  pool: redacted
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 20h8m with 0 errors on Sun Mar  8 21:09:24 2020
config:

    NAME                                            STATE     READ WRITE CKSUM
    redacted                                        DEGRADED     0     0     0
      raidz2-0                                      DEGRADED     0     0     0
        gptid/47537639-e686-11e7-8f40-d05099c376ba  ONLINE       0     0     0
        gptid/48188022-e686-11e7-8f40-d05099c376ba  ONLINE       0     0     0
        gptid/48e5de2a-e686-11e7-8f40-d05099c376ba  ONLINE       0     0     0
        5284207224207058746                         UNAVAIL      0     0     0  was /dev/gptid/49b35b9b-e686-11e7-8f40-d05099c376ba
        gptid/4a80c22f-e686-11e7-8f40-d05099c376ba  ONLINE       0     0     0
        gptid/4b53736b-e686-11e7-8f40-d05099c376ba  ONLINE       0     0     0
        gptid/4c265376-e686-11e7-8f40-d05099c376ba  ONLINE       0     0     0
        gptid/4cf57b2d-e686-11e7-8f40-d05099c376ba  ONLINE       0     0     0

errors: No known data errors

  pool: freenas-boot
state: ONLINE
  scan: scrub repaired 0 in 0h0m with 0 errors on Mon Mar 23 03:45:27 2020
config:

    NAME        STATE     READ WRITE CKSUM
    freenas-boot  ONLINE       0     0     0
      ada4p2    ONLINE       0     0     0

errors: No known data errors

Code:

redacted@redacted:~ # camcontrol devlist
<WDC WD60EFRX-68L0BN1 82.00A82>    at scbus0 target 0 lun 0 (pass0,ada0)
<WDC WD60EFRX-68L0BN1 82.00A82>    at scbus1 target 0 lun 0 (pass1,ada1)
<2.5" SATA SSD 3MG2-P M150821>     at scbus2 target 0 lun 0 (pass2,ada2)
<2.5" SATA SSD 3MG2-P M150821>     at scbus3 target 0 lun 0 (pass3,ada3)
<16GB SATA Flash Drive SFDK002A>   at scbus4 target 0 lun 0 (pass4,ada4)
<Marvell Console 1.01>             at scbus9 target 0 lun 0 (pass5)
<WDC WD60EFRX-68L0BN1 82.00A82>    at scbus10 target 0 lun 0 (pass6,ada5)
<WDC WD60EFRX-68L0BN1 82.00A82>    at scbus12 target 0 lun 0 (pass7,ada6)
<WDC WD60EFRX-68L0BN1 82.00A82>    at scbus13 target 0 lun 0 (pass8,ada7)
<WDC WD60EFRX-68L0BN1 82.00A82>    at scbus14 target 0 lun 0 (pass9,ada8)
<WDC WD60EFRX-68L0BN1 82.00A82>    at scbus15 target 0 lun 0 (pass10,ada9)

My question is, why would somebody build an array with seven 6tb hdds and one 124gb ssd? Is the ssd performing some specific function that is not obvious to me?
Does this not affect the redundancy of the array?

One of the two 124gb ssds is the drive that failed. Its seems the other is just sitting there as a warm spare perhaps? I could use that (theoretically) good drive for replacement but I don't see an obvious way to tell which of the two ssds is the fail(ed/ing) drive.

Is the best course of action to replace the ssd with an equivalent 6tb hdd? Seems like the answer is probably yes.

Thanks for any input you can lend.


Didnt realize the drive was not listing in any of these views due to the failure. I was able to purchase an identical replacement.

 

[phil-k]

Im not sure if this is relavent but this is built on a FreeNAS Mini XL+

 

[jgreco]

They built it with eight 6TB HDD's and one has disappeared, I think. The SSD's are probably intended for L2ARC or SLOG.

 

[jgreco]

Also be aware that a lot of the 6TB HDD's out there these days are shingled ("SMR") and are not suitable for use with FreeNAS. You will want to be very careful about sourcing a non-SMR drive.