Administrator Guide
If Tier 1 lls to within 95% of capacity, Storage Center creates a space management snapshot and moves it immediately to Tier 2 to
free up space on Tier 1. The space management snapshot is moved immediately and does not wait for a scheduled Data Progression.
Space management snapshots are marked as Created On Demand and cannot be modied manually or used to create View
Volumes. Space management snapshots coalesce into the next scheduled or manual snapshot. Storage Center creates only one on
demand snapshot per volume at a time.
Write Intensive (Tier 1)
The Write Intensive Storage Prole directs all initial writes to write-intensive SSDs on Tier 1 (RAID 10). The data does not progress
to any other tier. This prole is useful for storing transaction logs and temporary database les.
Flash Only with Progression (Tier 1 to Tier 2)
The Flash Only with Progression Storage Prole performs initial writes on high-performance Tier 1 drives. Less active data
progresses to Tier 2, but remains on SSDs. This prole is useful for storing volumes with data that requires optimal read performance,
such as golden images, linked clones, and some databases.
Low Priority with Progression (Tier 3 to Tier 2)
The Low Priority with Progression Storage Prole directs initial writes to less expensive Tier 3 (RAID 10) drives, and then allows
frequently accessed data to progress to Tier 2. This prole 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
Related link
Restore a Disk
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 modied
• Non-redundant Storage Types are not allowed
Storage Center Overview
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