Dell MD3200, MD3220 owner manual Storage Partitioning, 130

3Select Disk Group→ Change→ RAID Level.

4Select the RAID level (RAID level 0, RAID level 1, RAID level 5, or RAID level 6). The currently selected option is designated with a dot.

5Click Yes.

The RAID level operation begins.

Storage Partitioning

A storage partition is a logical entity consisting of one or more virtual disks that can be accessed by a single host or shared among hosts that are part of a host group. The first time you map a virtual disk to a specific host or host group, a storage partition is created. Subsequent virtual disk mappings to that host or host group do not create another storage partition.

One storage partition is sufficient if:

•Only one attached host accesses all of the virtual disks in the storage array.

•All attached hosts share access to all of the virtual disks in the storage array.

When you choose this type of configuration, all of the hosts must have the same operating system and special software (such as clustering software) to manage virtual disk sharing and accessibility.

More than one storage partition is required if:

•Specific hosts must access specific virtual disks in the storage array.

•Hosts with different operating systems are attached to the same storage array. In this case, a storage partition is created for each host type.

You can use the Storage Partitioning Wizard to define a single storage partition. The Storage Partitioning wizard guides you through the major steps required to specify which host groups, hosts, virtual disks, and associated logical unit numbers (LUNs) are to be included in the storage partition.

Storage partitioning fails when:

•All mappings are defined.

•You create a mapping for a host group that conflicts with an established mapping for a host in the host group.

•You create a mapping for a host in a host group that conflicts with an established mapping for the host group.

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Configuration: Disk Groups and Virtual Disks