7.7.5.15 DESCRIBE LUN

Purpose

The DESCRIBE LUN command displays a list of attributes for the LUN object type.

Syntax

DESCRIBE LUN

Usage Notes

The attributes for the DESCRIBE LUN command can include the following:

• cellDisk: The name of the flash disk, for example FD_02_rack1celadm10. Not used for hard disks.

• deviceName: Operating system device name for the LUN. For example, /dev/c1d5

• diskType: The type of disk.

• errorCount: Number of errors on this LUN.

• id: Identifier assigned by the system.

• isSystemLun: Indicator whether the disk is a system disk. If value is TRUE, then the disk is a system disk. If the value is FALSE, then the disk is not a system disk, and only has data on it.

• lunSize: Raw size of the LUN before being converted to a cell disk.

• lunUID: Unique identifier assigned by the system.

• lunWriteCacheMode: Status of LUN write cache. The status can be in Write Through Mode or Write Back Mode.

• name: Unique name assigned to the LUN. This might be different (or extended from) the LUN ID if the ID is not unique.

• overProvisioning: Indicator of the percentage of over-provisioned blocks in flash storage that are still available for a particular LUN. This attribute is only used for flash disks.

• physicalDrives: Physical disk names that form the LUN.

• raidLevel: Value of the RAID level that is used on the LUN. For example: RAID 0.

• status: Status of the LUN, which can be normal, warning, or critical.

Examples

The following example shows the DESCRIBE command with the LUN object.

Example 7-108 Describing the LUN Object

CellCLI> DESCRIBE LUN

         name
         cellDisk
         deviceName
         diskType
         errorCount
         id
         isSystemLun
         lunSize
         lunUID
         lunWriteCacheMode
         overProvisioning
         physicalDrives
         raidLevel
         status