Figure 22 Flexible Tier
High speed SAS disks
High speed S
SDs
Large capacity,
low-cost
Nearline SAS disks
Work volume
Low
High
ETERNUS DX
Access frequency
Management server
ETERNUS SF
Storage Cruiser
Monitors the data access frequency
and optimizes performance
Flexible Tier uses pools configured with multiple RAID groups (Flexible Tier Sub Pools: FTSP) and larger pools
(Flexible Tier Pools: FTRP) comprised of FTSP layers. Volumes used by Flexible Tier are referred to as Flexible Tier
Volumes (FTV).
Settings and operation management for the Flexible Tier function are performed with ETERNUS SF Storage
Cruiser. For more details, refer to "ETERNUS SF Storage Cruiser Operation Guide for Optimization Option".
2. Basic Functions
Operations Optimization (Virtualization/Automated Storage Tiering)
66 Design Guide
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