IBM Storwize Mdisk Tasks

This chapter contains the following sections:

Assign IBM Storwize MDisk to Pool

Summary
Assign MDisk To Pool
Description
This task assigns specified mdisk to specified storage pool by assigning unmanaged MDisks to pool. By adding unmanaged MDisks to a pool, their status changes to managed MDisks. Managed MDisks can belong to only one pool. Unmanaged MDisks can either be added to a newly created pool or to an existing pool to expand its capacity. Pools are commonly used to group MDisks from the same storage subsystem. A new pool can be created in the MDisks by Pools panel by clicking the Create Pool
Inputs
Input Description Mappable To Type Mandatory
MDisk Choose an IBM Storwize MDisk to assign to a pool ibm​Storwize​Mdisk​Identity Y
Storage Pool Choose an IBM Storwize storage pool ibm​Storwize​Pool​Identity Y
Outputs
Output Description Type
IBM_​STORWIZE_​OUTPUT_​MDISK_​IDENTITY Output of mdisk identity ibm​Storwize​Mdisk​Identity
IBM_​STORWIZE_​OUTPUT_​MDISK_​NAME Output of mdisk name gen_​text_​input
IBM_​STORWIZE_​OUTPUT_​POOL_​IDENTITY Output of pool identity ibm​Storwize​Pool​Identity
IBM_​STORWIZE_​OUTPUT_​TARGET_​POOL_​NAME Output of target pool name gen_​text_​input

Create IBM Storwize Array MDisk

Summary
Create IBM Storwize Array MDisk
Description
This task is used to create array(RAID) mdisks from internal storage. A managed disk (MDisk) is a logical unit of physical storage. MDisks are either arrays (RAID) from internal storage or volumes from external storage systems. MDisks are not visible to host systems. Each MDisk is divided into a number of extents, which are numbered, from 0, sequentially from the start to the end of the MDisk. The extent size is a property of storage pools. When an MDisk is added to a storage pool, the size of the extents that the MDisk is divided into depends on the attribute of the storage pool to which it has been added.
Inputs
Input Description Mappable To Type Mandatory
Account Name Choose an IBM Storwize account account​Name Y
MDisk Name Enter a name for the MDisk gen_​text_​input Y
Drive(s) Choose one or more drives ibm​Storwize​All​Internal​Drive​Identity Y
RAID level Choose a RAID level for the array MDisk ibm​Storwize​Raid​Level​List Y
Pool Choose an IBM Storwize storage pool ibm​Storwize​Pool​Identity Y
Enable encryption Check to enable encryption on the MDisk IBMStorwize​Boolean​List
Outputs
Output Description Type
IBM_​STORWIZE_​OUTPUT_​MDISK_​IDENTITY Output of mdisk identity ibm​Storwize​Mdisk​Identity
IBM_​STORWIZE_​OUTPUT_​MDISK_​NAME Output of mdisk name gen_​text_​input

Delete IBM Storwize Array MDisk

Summary
Delete Array MDisk
Description
This task deletes the specified array mdisk. If the mdisk has data on it, forcing the deletion will delete all data from the mdisk and moves it to other mdisks in the pool. The task fails if there are insufficient free extents on other disks in the mdisk group for the duration of the command. If you do specify the force flag, an attempt will be made to migrate the extents that are in use onto other free extents within the group. If there are not enough free extents in the group, the command will fail even if the force flag is specified.
Inputs
Input Description Mappable To Type Mandatory
MDisk Choose an IBM Storwize MDisk to be deleted ibm​Storwize​Mdisk​Identity Y
Delete RAID array MDisk even if it has data on it.​ System migrates data to other MDisks in the pool.​ Check to force delete for recursive deletion IBMStorwize​Boolean​List
Outputs
Output Description Type
IBM_​STORWIZE_​OUTPUT_​MDISK_​IDENTITY Output of mdisk identity ibm​Storwize​Mdisk​Identity
IBM_​STORWIZE_​OUTPUT_​MDISK_​NAME Output of mdisk name gen_​text_​input

Rename IBM Storwize MDisk

Summary
Rename MDisk
Description
This task assigns a new name for the specified mdisk.
Inputs
Input Description Mappable To Type Mandatory
MDisk Choose an IBM Storwize MDisk to rename ibm​Storwize​Mdisk​Identity Y
MDisk Name Enter a name for the MDisk gen_​text_​input Y
Outputs
Output Description Type
IBM_​STORWIZE_​OUTPUT_​MDISK_​IDENTITY Output of mdisk identity ibm​Storwize​Mdisk​Identity
IBM_​STORWIZE_​OUTPUT_​MDISK_​NAME Output of mdisk name gen_​text_​input

Select IBM Storwize MDisk Tier

Summary
Select MDisk Tier
Description
This task assigns the specified tier to an mdisk. Two tiers exist, Generic SSD & Generic HDD. All MDisks belong to one tier or the other, which includes MDisks that are not yet part of a pool. If you create a storage pool with both generic SSD MDisks (classified with the generic_ssd option) and generic HDD MDisks (generic_hdd or default option), Easy Tier is automatically turned on for pools with both SSD MDisks and HDD MDisks. IBM Storwize does not automatically identify external SSD MDisks; all external MDisks are put into the HDD tier by default. You must manually identify external SSD MDisks and change their tiers
Inputs
Input Description Mappable To Type Mandatory
MDisk Choose an IBM Storwize MDisk for which to set a tier ibm​Storwize​Mdisk​Identity Y
Select desired tier Choose an IBM Storwize tier ibm​Storwize​Mdisk​Tier​List Y
Outputs
Output Description Type
IBM_​STORWIZE_​OUTPUT_​MDISK_​IDENTITY Output of mdisk identity ibm​Storwize​Mdisk​Identity
IBM_​STORWIZE_​OUTPUT_​MDISK_​NAME Output of mdisk name gen_​text_​input

Set IBM Storwize Spare Goal

Summary
Set Spare Goal
Description
This task sets the number of spare drives that is required to protect the array from drive failures. If the number of drives assigned as Spare does not meet the configured spare goal, an error is logged in the event log that reads Array MDisk is not protected by sufficient spares. This error can be fixed by either replacing defunct drives,which occupy a spare drive, or by adding additional drives as spare. Remember, during the internal drive configuration, spare drives are automatically assigned according to the chosen RAID presetâs spare goals,
Inputs
Input Description Mappable To Type Mandatory
MDisk Choose an IBM Storwize MDisk on which to set a spare goal ibm​Storwize​Mdisk​Identity Y
Set Number of Spares (Goal) Enter the number of spares to set as the goal gen_​text_​input Y
Outputs
Output Description Type
IBM_​STORWIZE_​OUTPUT_​MDISK_​IDENTITY Output of mdisk identity ibm​Storwize​Mdisk​Identity
IBM_​STORWIZE_​OUTPUT_​MDISK_​NAME Output of mdisk name gen_​text_​input

Swap IBM Storwize MDisk Drive

Summary
Swap IBM Storwize MDisk Drive
Description
This task can be used to replace a drive in the array with another drive withthe status of Candidate or Spare. This action is used to replace a drive that has failed, orthat is expected to fail soon, for example, as indicated by an error message in the event log
Inputs
Input Description Mappable To Type Mandatory
MDisk Choose an IBM Storwize MDisk on which to swap drives ibm​Storwize​Mdisk​Identity Y
Select a drive to swap out of MDisk Choose an IBM Storwize drive to swap out ibm​Storwize​All​Internal​Drive​Identity
Select a drive to swap into MDisk Choose an IBM Storwize drive to swap in ibm​Storwize​All​Internal​Drive​Identity
Outputs
Output Description Type
IBM_​STORWIZE_​OUTPUT_​MDISK_​IDENTITY Output of mdisk identity ibm​Storwize​Mdisk​Identity
IBM_​STORWIZE_​OUTPUT_​MDISK_​NAME Output of mdisk name gen_​text_​input

Unassign IBM Storwize MDisks from Pool

Summary
Unassign MDisk From Pool
Description
This task unassigns the specified mdisk from the specified pool. if the mdisk has data on it, forcing the unassign will remove all data from mdisk. the system migrates the data to other mdisk in the pool.
Inputs
Input Description Mappable To Type Mandatory
MDisk Choose an IBM Storwize MDisk to unassign from the pool ibm​Storwize​Mdisk​Identity Y
Remove MDisk from storage pool even if it has data on it.​System migrates data to other MDisks in the pool Check to force delete for recursive deletion IBMStorwize​Boolean​List
Outputs
Output Description Type
IBM_​STORWIZE_​OUTPUT_​MDISK_​IDENTITY Output of mdisk identity ibm​Storwize​Mdisk​Identity
IBM_​STORWIZE_​OUTPUT_​MDISK_​NAME Output of mdisk name gen_​text_​input