Functions overview for
active flash and
Dynamic Tiering
Tier management is performed by both active flash and Dynamic Tiering. The differences in supported functionality are included in the table below.
|
Category |
Functions |
active flash |
Dynamic Tiering |
|
Initial page allocation |
Assigning new pages to the write data of the host |
Supported |
Supported |
|
Monitoring of performance |
Monitoring tiers based on the specified cycle time |
Supported |
N/A |
|
Tier relocation |
Promoting pages to the tier which is determined by the scheduled performance monitoring |
Supported |
Supported |
|
Promoting pages from the tier 2 or 3 to tier 1, the pages where the latest access frequency is suddenly high |
Supported |
N/A | |
|
To maintain capacity in the tier 1, demoting pages from the tier 1 to tier 2 or 3, the pages where the latest access frequency is low |
Supported |
N/A |