About virtual disks in the Storage Provisioning Option

Article:HOWTO23903  |  Created: 2010-01-01  |  Updated: 2011-08-31  |  Article URL http://www.symantec.com/docs/HOWTO23903
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About virtual disks in the Storage Provisioning Option

A virtual disk is a logical disk that you create on a storage array to provide virtual storage to the media server.

You can use any of the following to create a virtual disk:

  • The Storage Array Configuration Wizard

  • The management tools that the vendor of the storage array provides

  • The Microsoft Storage Manager for SANs management tool

If you create a virtual disk with a tool other than the Storage Array Configuration Wizard, you must configure the virtual disk for use with Backup Exec. After you configure a virtual disk, Backup Exec uses it as a destination device for jobs. Backup Exec automatically adds configured virtual disks to the All Virtual Disks device pool.

See Configuring a virtual disk on a storage array .

In the Storage Array Configuration Wizard, you specify the number of virtual disks to create from the physical disks that are in the storage array. The media server cannot access the physical disks. The media server can access only the virtual disks that you create.

Backup Exec uses a configured virtual disk in the same manner in which it uses a backup-to-disk folder.

See About backup-to-disk folders .

Backup Exec does not assign a drive letter to the virtual disk. You cannot browse for a virtual disk or access it from a command prompt. Since you cannot browse to the virtual disk, you cannot back it up with Backup Exec. Symantec recommends that you create a duplicate backup data job to move the data from the virtual disk to another device. For example, you can move the data to a tape or to another virtual disk on a separate storage array.

You can configure three low disk space thresholds for the virtual disks. As available disk space reaches each threshold, Backup Exec sends an alert. When the available disk space on the virtual disk reaches the third threshold, the alert warns you to create more disk space immediately.

You can configure these thresholds as defaults that apply to all new virtual disks, or as defaults that apply to a specific virtual disk.

See Editing default options for a virtual disk on a storage array.

Note:

You cannot share a virtual disk between two computers.

See Viewing storage array components in Backup Exec

See About predicting disk usage in the Storage Provisioning Option

See Editing the default options for all virtual disks on storage arrays

See Viewing properties for unconfigured virtual disks on a storage array

See About the All Virtual Disks device pool in the Storage Provisioning Option


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Article URL http://www.symantec.com/docs/HOWTO23903


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