IBM SAS RAID controller maintenance
Maintenance procedures include microcode updates, failure recovery procedures, and working with the battery pack.
Follow the recommended maintenance procedures in this section to help maintain your RAID controller for Linux.
- Usage tips
Follow recommended usage tips to help avoid controller and disk array problems. - Updating the controller microcode
Disk drives attached to this RAID adapter must contain the latest microcode level. Microcode can be updated using the iprconfig utility. - Rechargeable battery maintenance
Proper battery maintenance procedures can help to prevent data loss. - Replacing the rechargeable battery pack
You can replace battery packs that are maintainable both concurrently and nonconcurrently. - Replacing the cache directory card
Replace the cache directory card only if you are directed to do so by an isolation procedure or a maintenance analysis procedure (MAP). - Replacing an SSD module on the PCIe RAID and SSD SAS adapter
Use this procedure to replace an integrated solid-state drive (SSD) on a PCIe serial-attached SCSI (SAS) RAID and SSD Adapter. - Replacing a disk in a SAS RAID adapter
The data from the failing disk can be reconstructed to a replacement hot-spare disk if the hot-spare disk is available during the failure. If the hot-spare is active and is available during the failure, the state of the affected disk array is either Rebuilding or Optimal because of the use of a hot-spare disk. - Physical disks
Replace failed disks as soon as possible, even if a rebuild was initiated on a hot spare by the controller. - Disk failure recovery
The IBM® SAS RAID controller handles disk failures differently, depending on the RAID level involved. - Viewing SAS fabric path information
Use the iprconfig utility to view details of the SAS fabric information. - Viewing SCSI location and physical resource path
Use the iprconfig utility to view the Serial Computer System Interface (SCSI) location and physical resource path of a device. - Reclaiming IOA cache storage
A reclamation procedure for the I/O adapter (IOA) cache storage is sometimes used to resolve cache problems. Perform this procedure only if directed to do so by a maintenance analysis procedure (MAP).
Parent topic: SAS RAID controllers for Linux
Last updated: Wed, May 24, 2017