Disk tiers are comprised of aggregating 1 or more Disk Groups of similar physical disks.
The MSA 2040 supports 3 distinct tiers:
1. A Performance tier with SSDs
2. A Standard SAS tier with Enterprise SAS HDDs
3. An Archive tier utilizing Midline SAS HDDs.
The MSA 2040 automated tiering engine moves data between available tiers based on the access characteristics of that data.
Frequently accessed "pages"? will migrate to the highest available tier delivering maximum I/O´s to the application (Performance Tiering).
Another feature to the MSA 2040 tiering engine is Archive Tiering where "cold"? or not frequently accessed data can be moved to lower
performance tiers. Pages are migrated between tiers automatically such that I/O`s are optimized in real-time.