13.4 Viewing Details of a Software RAID Device

You can view the following information about a selected software RAID device:

Table 13-3 Explanation of Details for a Software RAID Device

Software RAID Device Detail

Description

Name

The administrator-specified descriptive name for the RAID.

In iManager, if you do not specify a name for the device at create time, a name is autogenerated in the format of RAID <type> Device <number>.

Major Number

Minor Number

The device identity in major:minor format. Major and minor numbers are associated with the device special files in the /dev directory and are used by the operating system to determine the actual driver and device to be accessed by the user-level request for the special device file.

GUID

The Global Unique Identifier number that NSS assigns to the storage object. This number is necessary so your file system can locate the specific device.

Share State

Shareable for Clustering or Not Shareable for Clustering. The share state can be modified on the Devices page.

If you assign partitions to a software RAID device, all the devices for those member partitions must either be marked as Shareable for Clustering, or all marked as Not Shareable for Clustering.

Capacity

The total storage capacity of the device that is reserved for data storage. For a RAID 0, the storage capacity is equal to the sum of its partitions. For RAID 1, the storage capacity is equal to a single partition size; the duplicate partitions are mirrors. For RAID 5, the storage capacity is equal to the sum of its partitions minus one partition for parity.

Used Space

The amount of space on the device that is currently in use by NSS partitions.

Free Space

The total amount of space on the device that is currently not in use.

Pools

The drop-down list shows all pools that exist on this device. To view a pool’s details or to manage a pool, select the pool from the list, then click the View Details icon to go to the Pools page for that pool.

Number of Pools

The total number of pools that use this device.

Type

The type of RAID (such as RAID 0, RAID 1, RAID 5).

Stripe Size

The maximum size (in KB) of a data write, as configured for a RAID 0 or RAID 5 device.

Partition Size

The size (in MB) of partitioned space per drive.

Partitions

Lists the member partitions of the selected software RAID device in a drop-down list. To view a partition’s details, select the partition in the drop-down list, then click the View Details icon.

Number of Partitions

The total number of partitions in the selected software RAID device.

Status

Shows the status of a RAID 1 (mirrored) device’s partitions:

  • In Sync: The mirror group is fully synchronized.

  • Out of Sync: The mirror group is only partially synchronized, and the percent mirroring in progress.

  • Not Mirrored: The device is not mirrored (only one partition).

Viewing Details in iManager

  1. In iManager, click Storage > Software RAIDs.

    For instructions, see Section 9.1.5, Accessing Roles and Tasks in iManager.

  2. Select a server in the eDirectory tree where you are logged in.

    For instructions, see Section 9.1.6, Selecting a Server to Manage.

    This opens the Software RAIDs Management page.

    The Software RAIDs list displays the virtual RAID devices on the selected server. The list might include any RAID O, RAID 1, or RAID 5 devices that you created. It does not list any hardware RAID devices in this list.

  3. Select a virtual storage device in the Software RAIDs list to view information about that device, then wait for the page to refresh.

Viewing Details in NSSMU

  1. In NSSMU, select Software RAIDs.

  2. Select the RAID device you want to manage and wait for the information to be displayed.