7.7.1.11 ALTER PHYSICALDISK

Purpose

The ALTER PHYSICALDISK command prepares a disk for replacement.

Syntax

ALTER PHYSICALDISK { ALL [ HARDDISK ] | disk_id1 [,disk_id2]  ...  }
 { DROP FOR REPLACEMENT [ MAINTAIN REDUNDANCY [ NOWAIT ] | FORCE ] | REENABLE }

Usage Notes

• The DROP FOR REPLACEMENT option:

  • Is supported only for hot-pluggable disks

  • Checks if it is safe to proactively replace the specified disks. For example, if you attempt to drop the last good system disk, then replacing it would cause the system to crash.

  • If used without the MAINTAIN REDUNDANCY option, the DROP FOR REPLACEMENT option off-lines any data grid disks that exist on the physical disks.

  • Flushes the disk controller cache for physical disks based on hard disk drives

  • Prepares devices so that they can be removed online. For example, for flash devices this option powers off the associated PCIe slot.

• The following options are available in conjunction with the DROP FOR REPLACEMENT option:

  • MAINTAIN REDUNDANCY maintains data redundancy by rebalancing data before dropping the corresponding ASM disks. Without this option, the specified grid disks are off-lined immediately, and data redundancy is affected until the physical disks are re-enabled.

  • In addition to the MAINTAIN REDUNDANCY option, NOWAIT allows the ALTER PHYSICALDISK command to complete immediately while the DROP FOR REPLACEMENT MAINTAIN REDUNDANCY operation runs asynchronously in the background.

  • FORCE ignores inbuilt safety checks and performs the command even if it is deemed unsafe. This option cannot be used in conjunction with the MAINTAIN REDUNDANCY option.

• REENABLE re-enables a normal physical disk that was dropped for replacement.

• SERVICELED is now obsolete. If you use this option, you will get the error message: CELL-04591.

Examples

Example 7-63 Dropping a Normal, Functioning Physical Disk

This example shows how to drop a physical disk.

CellCLI> ALTER PHYSICALDISK FLASH_5_1 DROP FOR REPLACEMENT

Example 7-64 Re-enabling a Physical Disk

This example shows how to re-enable a physical disk.

CellCLI> ALTER PHYSICALDISK 12:3 REENABLE