Administrator Guide

Low Priority with Progression (Tier 3 to Tier 2)

The Low Priority with Progression Storage Profile directs initial writes to less expensive Tier 3 (RAID 10) drives, and then allows

frequently accessed data to progress to Tier 2. This profile is useful for migrating large amounts of data to Storage Center without

overloading Tier 1 SSDs.

Storage Virtualization for SCv2000 Series Controllers

SCv2000 series controllers manage many storage virtualization options automatically.

Disk Management on SCv2000 Series Controllers

Storage Centers with SCv2000 series controllers manage disks automatically, limiting the disk management options. After adding

disks, Storage Center recognizes the new disks, creates a new disk folder if necessary, then manages the disks in the disk folder. If

a disk is intentionally down for testing purposes, then is deleted, you can restore the disk to manage the disk again in a disk folder.

The following disk management options are not available with SCv2000 series controllers:

• Creating disk folders

• Adding disks to disk folders

• Managing disk spares

Storage Types for SCv2000 Series Controllers

SCv2000 series controllers create a Storage Type for each disk class, and manage Storage Types automatically.

SCv2000 series controllers manage Storage Types automatically in the following ways:

• Storage Types are created automatically for each disk class

• Storage Types have a 2MB page size

• Storage Types cannot be modified

• Non-redundant Storage Types are not allowed

RAID Tiering for SCv2000 Series Controllers

RAID Tiering for SCv2000 series controllers moves data between RAID 10 and RAID 5/6. It does not move data between Storage

Tiers. RAID Tiering happens at 7 PM everyday. Data progression runs until it completes or reaches the maximum run time.

Storage Profiles for SCv2000 Series Controllers

The following table summarizes the Storage Profiles available to SCv2000 series controllers.

Name

Initial Write Tier Tier (T) and RAID Levels RAID Tiering

Balanced 1

Writes: T1 RAID 10

Snapshots: T1 RAID 5/6

Between RAID types only

Maximize Performance 1

Writes: T1 RAID 10

Snapshots: T1 RAID 10

Maximize Efficiency 1

Writes: T1 RAID 5/6

Snapshots: T1 RAID 5/6

Balanced

The Balanced Storage Profile balances efficiency and performance for any volume using that Storage Profile.

When a volume uses the Balanced Storage Profile, all new data is written to Tier 1. When Storage Center creates a snapshot, Data

Progression moves snapshot data from RAID 10 to RAID 5/6.

Storage Center Overview