ViPR 2.2 - What are ViPR block and file virtual pools?

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What are ViPR block and file virtual pools?

Gain an understanding of block and file virtual pools, ViPR abstractions of underlying physical storage tiers with defined performance and protection characteristics.

After a ViPR System Administrator creates a virtual array, he or she must create block/file virtual pools in the virtual array. A virtual pool represents a storage service offering from which you can provision storage. A virtual pool can reside in a single virtual array, or it can span multiple virtual arrays.

ViPR has two types of virtual pools: block virtual pools and file virtual pools.

Block virtual pools and file virtual pools are sets of block and file storage capabilities that meet various storage performance and cost needs.

A ViPR user with a System Administrator role creates and configures block and file virtual pools in a virtual data center. Rather than provision capacity on storage systems, a System Administrator can enable users to use block and file virtual pools that meet their unique requirements.

After the System Administrator creates virtual pools, users can pick which virtual pool they want their storage to use. ViPR applies the built-in best practices to select the best physical array and storage pool that meet the provisioning request.

For block and file virtual pools, the System Administrator defines a set of storage service capabilities, such as:

The System Administrator then assigns physical storage pools on the ViPR-managed storage systems to the virtual pool.

ViPR automatically matches existing physical pools on the ViPR-managed storage systems to the virtual pool characteristics that the System Administrator specifies. The System Administrator can enable ViPR to automatically assign the matching physical pools to the virtual pool that he or she is creating, or the System Administrator can select a subset of the matching physical pools manually to assign to the virtual pool. An important step, a System Administrator must set up the block and file virtual pools carefully, because the virtual pools drive all future block and file provisioning tasks that end users perform.

After the System Administrator creates the virtual pools, users can create file and block storage using the virtual pool that has the storage characteristics they require.

The file and block stores provide a set of built-in virtual pool capabilities and if desired, enable the System Administrator to define custom capabilities.

For example, the System Administrator defines two virtual pools in the file store:

In the following figure, the System Administrator creates a block virtual pool, Mission Critical. The defined set of storage capabilities indicate that the Mission Critical block virtual pool:

When end users want to create a volume that has these storage characteristics, they simply select the Mission Critical block virtual pool when they create the volume.

System Administrator Creates ViPR Virtual Pool

When a System Administrator creates a virtual pool, a virtual array must be defined. A System Administrator can assign a virtual pool to more than one virtual array.

An Access Control List (ACL) controls tenant access to each virtual pool. Only tenants in the virtual pool's ACL receive access to provision to that virtual pool. The System or Security Administrator sets the ACL for a virtual pool. If a System or Security Administrator does not set the ACL, all tenants in the ViPR virtual data center can use the virtual pool to provision.

A System Administrator can, if desired, enable a maximum total storage capacity (quota) on a virtual pool that cannot be exceeded. The ViPR metering records contain the maximum total capacity values for a virtual pool.

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