chmdisk
Use the chmdisk command to modify the name or IBM® Easy Tier® settings for a managed disk (MDisk).
Syntax
>>- chmdisk -- --+-------------------------+-- -----------------> '- -name -- new_name_arg -' >--+--------------------------------+---------------------------> '- -tier --+- tier0_flash -----+-' +- tier1_flash -----+ +- tier_enterprise -+ '- tier_nearline ---' >--+--------------------------------+--+- mdisk_id ---+-------->< '- -easytierload --+-default---+-' '- mdisk_name -' +-low-------+ +-medium----+ +-high------+ '-very_high-'
Parameters
- -name new_name_arg
- (Optional) Specifies the new name to be applied to the managed disk.
- -tier tier0_flash | tier1_flash | tier_enterprise | tier_nearline
- (Optional) Specifies the new tier of the MDisk. The values are:
- tier0_flash
- Specifies a tier0_flash hard disk drive or an external MDisk for the newly discovered or external volume.
- tier1_flash
- Specifies an tier1_flash (or flash drive) hard disk drive or an external MDisk for the newly discovered or external volume.
- tier_enterprise
- Specifies a tier_enterprise hard disk drive or an external MDisk for the newly discovered or external volume.
- tier_nearline
- Specifies a tier_nearline hard disk drive or an external MDisk for the newly discovered or external volume.
- -easytierload default | low | medium | high | very_high
- (Optional) Specifies the Easy Tier load
(amount) to place on a non-array MDisk within its tier.If Easy Tier is either overusing or under-utilizing a particular MDisk, modify the easy_tier_load value to change the load size.Note: Specifying default returns the performance capability to the value used by the system. Specify very_high only if the MDisk tier is ssd.
- mdisk_id | mdisk_name
- (Required) Specifies the ID or name of the managed disk to modify.
Description
This command modifies the attributes of a managed disk.
An invocation example
chmdisk -tier tier0_flash mdisk13
The resulting output:
No feedback
An invocation example
chmdisk -tier tier_nearline mdisk0
The resulting output:
MDisk Group, id [13], successfully created
An invocation example
chmdisk -easytierload high mdisk0
The resulting output:
MDisk Group, id [13], successfully created