Administrator Guide

6. Click OK.
Check the Status of a RAID Rebalance
The RAID Rebalance displays the status of an in-progress RAID rebalance and indicates whether a rebalance is needed.
Steps
1. If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane of
Unisphere Central.
2. From the
STORAGE menu, click Disks.
The Disks view is displayed.
3. Click Rebalance RAID.
The RAID Rebalance dialog box shows the status of a RAID rebalance.
4. Click OK.
Managing Storage Types
Storage Types determine how Data Progression moves data within a disk folder. Each disk folder has a corresponding Storage
Type.
NOTE: Modifying tier redundancy requires a RAID rebalance to be completed, and should not be performed unless sufficient
free disk space is available within the disk folder.
Create a Storage Type
Creating a Storage Type sets the redundancy level for each tier and assigns the Storage Type to a disk folder.
Prerequisites
SCv2000 series storage systems do not support creating new Storage Types.
About this task
NOTE:
Do not assign multiple Storage Types to one disk folder. Data Progression may not perform as intended with multiple
Storage Types assigned to one disk folder.
Steps
1. If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane of
Unisphere Central.
2.
From the STORAGE menu, click Storage Types.
The Storage Types view is displayed.
3. Click (New).
The New Storage Type dialog box opens.
4. Select a disk folder from the Disk Folder drop-down menu.
5. Select a redundancy type.
● Redundant: Protects against the loss of any one drive (if single redundant) or any two drives (if dual redundant).
● Non-Redundant: Uses RAID 0 in all classes, in all tiers. Data is striped but provides no redundancy. If one drive fails, all
data is lost.
NOTE:
Non-Redundant is not recommended because data is not protected against a drive failure. Do not use
non-redundant storage for a volume unless the data has been backed up elsewhere.
6. For Redundant Storage Types, you must select a redundancy level for each tier unless the drive type or size requires a
specific redundancy level
● Single Redundant: Single-redundant tiers can contain any of the following types of RAID storage:
○ RAID 10 (each drive is mirrored)
○ RAID 5-5 (striped across 5 drives)
192
Storage Center Maintenance