Administrator Guide
Managing Data Redundancy
Manage data redundancy by modifying tier redundancy or creating Storage Types.
Redundancy Requirements
Drive size is used to determine the redundancy level to apply to a tier of drives. If any drive in a tier surpasses a threshold size, a specic
redundancy level can be applied to the tier containing that drive. If a redundancy level is required, the Storage Center operating system sets
the level and it cannot be changed.
Table 12. HDD Redundancy Recommendations and Requirements
Disk Size Level of Redundancy Recommended or Enforced
Up to 3 TB Dual redundant is the recommended level
NOTE: Non-redundant storage is not an option for
SCv2000 Series Storage Centers.
3 TB and higher Dual redundant is required and enforced
Table 13. SSD Redundancy Recommendations and Requirements
Disk Size Level of Redundancy Recommended or Enforced
Up to 18 TB Dual redundant is the recommended level
NOTE: Non-redundant storage is not an option for
SCv2000 Series Storage Centers.
18 TB and higher Dual redundant is required and enforced
Managing RAID
Modifying tier redundancy, or adding or removing disks can cause data to be unevenly distributed across disks. A RAID rebalance
redistributes data over disks in a disk folder.
Rebalance RAID
Rebalancing RAID redistributes data over the disks according to the Storage Type. Rebalance the RAID after releasing a disk from a disk
folder, when a disk fails, or after adding a disk.
1 If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane.
2
From the STORAGE menu, select Disks.
The Disks view is displayed.
3 Click Rebalance RAID.
The RAID Rebalance dialog box opens. If a RAID rebalance is needed, the dialog box shows RAID rebalance options.
4 Select Perform RAID Rebalance immediately.
5 Click OK.
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Storage Center Maintenance