Administrator Guide

After you configure the key server, the Server Connectivity status is shown as Up on the Edit Storage Center Settings dialog
box.
Managing Data Redundancy
Manage data redundancy by modifying tier redundancy or creating Storage Types.
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.
Redundancy Requirements
Redundancy requirements for each disk tier are based on the size of disks in the tier.
• By default, disks of 900 GB are set to dual redundancy. This setting can be changed to single-redundant for disks under 1.8 TB.
• In a Storage Center with a new disk pool, disks 1.8 TB or larger require dual redundancy, and the single redundancy option is
disabled.
• When adding 2.6 TB or larger disks to an existing Storage Center, dual redundancy is mandatory, and the single redundancy
option is disabled.
NOTE: Dual redundancy is implemented using RAID 6, which requires a minimum of seven disks to configure RAID 6
with a single spare. If a tier does not contain seven disks, the default setting is single-redundant for any disk drive
size.
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
Storage Center must be using one of the following controllers:
• SC9000
• SC8000
• SC4000 series
• CT-SC040
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. Expand the Dell Storage Manager menu, and then click Storage.
2. In the SC Series tab, select a Storage Center to open the Storage Center view.
3. Click the Storage tab, and then click the Storage Types subtab.
4. Click New. The New Storage Type dialog box opens.
5. Select a disk folder from the Disk Folder drop-down menu.
6. Select a redundancy type.
• To create a redundant Storage Type, select Redundant.
• To create a non-redundant Storage Type, select Non-Redundant.
7. For redundant Storage Types, modify the redundancy for each tier as needed.
• For single-redundant RAID levels, select Redundant.
• For dual-redundant RAID levels, select Dual Redundant.
8. Select a Datapage Size.
Storage Center Maintenance
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