FAS2520 aggr0 double degraded, replacement drives detected as SAS 15000

[Zeam]

Case description:

FAS2520 / Data ONTAP 7-Mode: aggr0 double degraded, replacement drives detected as SAS 15000 and not accepted as matching spares, maintenance disk stuck in testing.

Current problem

• aggr0 is currently double degraded.
• The RAID group shows two FAILED data members.
• We have available spare disks, but the system is not using them for rebuild.
• A maintenance disk (0a.00.3) remains in testing status.

Observed behavior

From aggr status -r:

• Aggregate aggr0 (online, raid_dp, degraded) (block checksums)
• RAID group /aggr0/plex0/rg0 (double degraded, block checksums)
• Two data positions in the RAID group show as FAILED

From aggr status -s:

• Current spare disks are:
  • 0a.00.1 → SAS 15000
  • 0a.00.8 → SAS 15000 (at one point shown as not zeroed)

From aggr status -r:

• Existing RAID group members are shown as FSAS 7200
• Maintenance disks section shows:
  • 0a.00.3 → testing, FSAS 7200

From disk show -v:

• 0a.00.3 shows OWNER = FAILED

Drive identification inconsistency

From storage show disk -T -x:

• 0a.00.1 and 0a.00.8 are identified as:
  • Model = X477_SMBPE04TA07
  • Rev = NA00
  • Type = SAS
• Most other data disks in the shelf are identified as:
  • Model = X477_SMEGX04TA07
  • Rev = NA03
  • Type = FSAS

We also replaced the disk in slot 0a.00.8 with another brand-new replacement drive, but the newly inserted disk was still detected as SAS / RPM 15000.

What we already checked

• raid.disktype.enable = off
• raid.rpm.ata.enable = off
• Broken disks (empty) from aggr status -f
• Current spare disks are owned by the controller and use block checksum
• Another new replacement drive inserted into 0a.00.8 still shows as SAS 15000

Our concern

It appears that the available replacement drives are not being accepted as valid matching spares for aggr0, possibly because the RAID group members are shown as FSAS 7200 while the replacement drives are detected as SAS 15000.

We need help with

1. Please confirm whether the replacement drives/FRUs are correct for this platform and RAID group.
2. Please confirm whether there is a disk qualification / drive firmware / recognition issue causing the system to identify replacement drives as SAS instead of FSAS.
3. Please advise the supported recovery procedure for aggr0 in the current double degraded state.
4. Please advise how to handle maintenance disk 0a.00.3, which remains in testing and also appears as OWNER = FAILED.

Commands / outputs available

We can provide the outputs of:

• aggr status -r
• aggr status -s
• aggr status -f
• storage show disk -T -x
• storage show disk -x
• sysconfig -d
• disk show -v
• options raid.disktype.enable
• options raid.rpm.ata.enable

Please advise next steps.

Best regards

[Zeam]

One additional question: disk 0a.00.0 and disk 0a.00.1 appear very similar in the visible outputs (same vendor/model family and revision), but ONTAP identifies 0a.00.0 as FSAS/7200 in RAID view while 0a.00.1 is identified as SAS/15000 spare. Please help confirm whether this is due to DQP/drive qualification/firmware recognition or another disk-type mapping issue.

[Zeam]

Update System information:

- Storage system name: sn7047064-stor

- Model: FAS2520

- Data ONTAP version: 8.2.4 7-Mode

- System ID: 0537073381

- Management IP: 10.67.47.92

[Zeam]

sn7047064-stor*> sysconfig -d

Device      HA  SHELF BAY CHAN   Disk Vital Product Information

----------  --  ----- --- ----   ------------------------------

0a.00.0     0a  0     0   SA:A   ZC12C9EB

0a.00.1     0a  0     1   SA:A   ZC12SJ8R

0a.00.2     0a  0     2   SA:A   Z1ZBWY1P

0a.00.3     0a  0     3   SA:A   Not available.

0a.00.4     0a  0     4   SA:A   Z1ZBWYYP

0a.00.5     0a  0     5   SA:A   Z1ZBWZX1

0a.00.6     0a  0     6   SA:A   Z1ZBWXZG

0a.00.7     0a  0     7   SA:A   Z1ZBWZFN

0a.00.8     0a  0     8   SA:A   ZC12SH5E

0a.00.9     0a  0     9   SA:A   Z1ZBWZYZ

0a.00.10    0a  0     10  SA:A   Z1ZBWXWD

0a.00.11    0a  0     11  SA:A   Z1ZBWQ3W

[Zeam]

sn7047064-stor*> storage show disk -T -x

DISK      SHELF BAY SERIAL    VENDOR  MODEL             REV  TYPE

--------  ----- --- --------  ------  ----------------  ---  -----

0a.00.1   0     1   ZC12SJ8R  NETAPP  X477_SMBPE04TA07  NA00 SAS

0a.00.8   0     8   ZC12SH5E  NETAPP  X477_SMBPE04TA07  NA00 SAS

0a.00.0   0     0   ZC12C9EB  NETAPP  X477_SMBPE04TA07  NA00 FSAS

0a.00.2   0     2   Z1ZBWY1P  NETAPP  X477_SMEGX04TA07  NA03 FSAS

0a.00.3   0     3   Z1ZBWS35  NETAPP  X477_SMEGX04TA07  NA03 FSAS

0a.00.4   0     4   Z1ZBWYYP  NETAPP  X477_SMEGX04TA07  NA03 FSAS

0a.00.5   0     5   Z1ZBWZX1  NETAPP  X477_SMEGX04TA07  NA03 FSAS

0a.00.6   0     6   Z1ZBWXZG  NETAPP  X477_SMEGX04TA07  NA03 FSAS

0a.00.7   0     7   Z1ZBWZFN  NETAPP  X477_SMEGX04TA07  NA03 FSAS

0a.00.9   0     9   Z1ZBWZYZ  NETAPP  X477_SMEGX04TA07  NA03 FSAS

0a.00.10  0     10  Z1ZBWXWD  NETAPP  X477_SMEGX04TA07  NA03 FSAS

0a.00.11  0     11  Z1ZBWQ3W  NETAPP  X477_SMEGX04TA07  NA03 FSAS

[Zeam]

sn7047064-stor*> aggr status -f

Broken disks (empty)

[Zeam]

sn7047064-stor*> disk show -v

DISK      OWNER                         POOL   SERIAL NUMBER  HOME                          DR HOME  CHKSUM

--------  ----------------------------  -----  -------------  ----------------------------  -------  ------

0a.00.8   sn7047064-stor(537073381)     Pool0  ZC12SH5E       sn7047064-stor(537073381)             Block

0a.00.0   sn7047064-stor(537073381)     Pool0  ZC12C9EB       sn7047064-stor(537073381)             Block

0a.00.10  sn7047064-stor(537073381)     Pool0  Z1ZBWXWD       sn7047064-stor(537073381)             Block

0a.00.4   sn7047064-stor(537073381)     Pool0  Z1ZBWYYP       sn7047064-stor(537073381)             Block

0a.00.7   sn7047064-stor(537073381)     Pool0  Z1ZBWZFN       sn7047064-stor(537073381)             Block

0a.00.6   sn7047064-stor(537073381)     Pool0  Z1ZBWXZG       sn7047064-stor(537073381)             Block

0a.00.2   sn7047064-stor(537073381)     Pool0  Z1ZBWY1P       sn7047064-stor(537073381)             Block

0a.00.11  sn7047064-stor(537073381)     Pool0  Z1ZBWQ3W       sn7047064-stor(537073381)             Block

0a.00.5   sn7047064-stor(537073381)     Pool0  Z1ZBWZX1       sn7047064-stor(537073381)             Block

0a.00.9   sn7047064-stor(537073381)     Pool0  Z1ZBWZYZ       sn7047064-stor(537073381)             Block

0a.00.3   FAILED                        -----  Z1ZBWS35       sn7047064-stor(537073381)             Block

0a.00.1   sn7047064-stor(537073381)     Pool0  ZC12SJ8R       sn7047064-stor(537073381)             Block

[Zeam]

In OnCommand System Manager, I right-clicked spare disk 0a.00.1 and selected "Add to Aggregate".

A warning was shown first:

"OnCommand System Manager does not recommend adding disks to an aggregate from this page..."

After clicking Continue, the system returned this error:

"No existing aggregates available to which you can add the selected disk(s). Select some other disks."

This suggests that the controller does not consider 0a.00.1 eligible to be added to any existing aggregate, including aggr0.