Thin provisioning and the enhancement in performance it provides are supported by SHC-OSD for /390 and x86 servers.
Information on Thin Provisioned Volumes (TPVs)
The /SHOW-STORAGE-DEVICE-CONFIG RAID-LEVEL=*TDEV command selects TPVs. These are labeled with T in the RAID display column.
The /SHOW-STORAGE-DEVICE-CONFIG INFORMATION=*THIN-DEVICES command displays the specific properties of a TPV with the assignment to a TPP and the specific capacity values. See the examples on "SHOW-STORAGE-DEVICE-CONFIG Displays the device configuration".
Information on Thin Provisioned Pools (TPPs)
The /SHOW-STORAGE-CONFIGURATION INFORMATION=*THIN-POOLS command supplies information on the configuration of the TPPs. The information also shows the allocation of the RAID groups to the TPPs; the implementation for TPPs on ETERNUS DX/AF builds directly on RAID groups. See the example on "SHOW-STORAGE-CONFIGURATION Displays the configuration".
Monitoring the Thin Provisioned Pools (TPP)
SHC-OSD monitors the occupancy level pf the TPPs using the threshold values ATTENTION and WARNING which were set in the storage system. Monitoring by SHC-OSD can be set, see the THIN-POOL-MONITORING parameter in the SHC-OSD parameter file in the section "Configuration of SHC-OSD".
Messages NDE0077 (ATTENTION) and NDE0078 (WARNING) (which you can answer) on the console show when a particular threshold value for the occupancy level of a TPP has been exceeded.
When the limit value is reached, further capacity can be provided in the TPP either automatically or through administrative intervention. When the threshold values set are fallen below again in the TPP, this is shown by the message NDE0073 on the console. Messages NDE0077/NDE0078 are then answered automatically if they are still open.
TPVs are not monitored.