Dell Storage Manager 2020 R1 Administrator's Guide

Storage Summary Bar Chart

Use the bar chart to view available disk space, allocated disk space, used disk space, free disk space, and Savings vs RAID 10. In addition, the amount of configured disk space and oversubscribed disk space is displayed below the bar chart.

The following information is displayed in the bar chart on the Storage Summary plugin:

Field/Option

Description

Configured Space

Total amount of space available on all of the configured volumes in the Storage Center. Calculated as:

• Storage Center version 7.4.10 and later—Configured space is equal Total space
• Storage Center version 7.2 and earlier, Configured space is equal to Available space

Oversubscribed

Configured Space minus the Available Space.

Spare Space

Amount of space distributed across all drives that is reserved for balancing drive usage and recovering from a drive failure. (Displayed in Storage Center version 7.4.2 and later.)

Available Space

Amount of space allocated for volumes and the free space that can be used by the Storage Center. Calculated as:

• Storage Center version 7.4.10 and later —Used space + Free space
• Storage Center versions 7.3-7.4.2—Allocated + Free space

Free Space

Amount of disk space available for use by a Storage Center. Calculated as:

• Storage Center version 7.4.10 and later—Storage Type Free space + Disk Free space
• Storage Center versions 7.3-7.4.2—Free space is equal to Disk Free space

Used Space

Amount of configured space used by the Storage Center plus RAID overhead.

Allocated Space

Amount of disk space allocated on the disks for volumes plus RAID overhead. (Not used in Storage Center versions 7.1 or 7.2).

Savings vs RAID Ten

Amount of disk space saved by effective use of RAID 5/6 and/or Data Reduction compared to possible disk space savings from RAID 10.