Creating a storage tier
You can create a storage tier by using the VIOS command-line interface. The system tier is created when you create a cluster. This procedure focuses on creating a user tier.
Consider the following
prerequisites for creating a user tier:
- A value must be entered for a failure group. If no value is specified for the failure group, a default failure group is created and named with the default failure group name default.
- A list of cluster capable physical volumes (PVs) must be available.
- The tier name must be limited to 63 characters, can be alphanumeric, and can contain '_' (underscore), '-" (hyphen), or '.' (dot) characters. The tier name must always be unique within a pool.
You can create a user tier with a specified name, containing specific physical volumes (PVs). PVs can be specified as a space-delimited list of PVs in the command, or as a file containing a space-delimited list of PVs. You can add user tiers to a pool by using the VIOS command-line interface (CLI). You can add only one tier at a time.
To create a tier with one VIOS logical partition, complete the following steps:
- Identify the PVs that you want to add to the new user tier.
- To create a tier, run the following command: tier -create -tier tier1: hdisk1 hdisk2.
Examples:
1. To create a user tier that specifies the physical volumes to be used in a space-delimited list file, rather than in an inline list of physical volumes, enter the following command:tier -create -file -tier tier1: /tmp/pvfilecluster –create –clustername cname –repopvs hdisk4
–sp pname –systier hdisk5 –usrtier userTier1:hdisk6