Oracle ZFS Storage Appliance: All Read Cache SSD's Present in a ZFS Cluster Node are Missing from the BUI/CLI

(Doc ID 2296823.1)

Last updated on AUGUST 23, 2017

Applies to:

Oracle ZFS Storage ZS3-4 - Version All Versions and later
Oracle ZFS Storage ZS4-4 - Version All Versions and later
Oracle ZFS Storage ZS5-4 - Version All Versions and later
Oracle ZFS Storage ZS3-2 - Version All Versions and later
Oracle ZFS Storage ZS5-2 - Version All Versions and later
7000 Appliance OS (Fishworks)

Symptoms

An Oracle ZS4-4 appliance has two online read cache SSDs in the cluster head. The SSDs are located in HDD2 and HDD3 respectively.

The SSDs appear fine and exhibit a green LED display. The problem is that neither of the disks show up in the AFS Appliance management software.

 

We can see the boot disks, but the SSDs are missing:

 

Changes

There may not have been any changes to the system. It may just be that the Administrator was not aware that the disks were missing.

In other cases, the problem may occur after the motherboard or any hardware on the cluster node has been replaced.

The problem may also occur after a failover resulting in no read cache disks assigned to the storage pool. 

 

Cause

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