Figure 25 Ftv Configuration - Fujitsu ETERNUS DX100 S4 Design Manual

2. Basic Functions
Operations Optimization (Virtualization/Automated Storage Tiering)
The Flexible Tier uses pools configured by multiple RAID groups (Flexible Tier Sub Pools: FTSP) and
larger pools comprised by layers of Flexible Tier Sub Pools (Flexible Tier Pools: FTRP). A volume
which is used by the Flexible Tier is referred to as the Flexible Tier Volume (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 Opti-
mization Option".

Figure 25 FTV Configuration

SSD
FTSP (High tier)
• Flexible Tier Pool (FTRP)
An FTRP is a management unit for FTSP to be layered. Up to three FTSPs can be registered in one
FTRP. This means that the maximum number of layers is three.
The priority orders can be set per FTSP within one FTRP. Frequently accessed data is stored in an
FTSP with a higher priority. Because FTSPs share resources with TPPs, the maximum number of
FTSPs which can be created is decreased when TPPs are created.
For data encryption, specify encryption for a pool when creating an FTRP or create an FTSP with
a Self Encrypting Drive (SED).
Flexible Tier Sub Pool (FTSP)
•
An FTSP consists of one or more RAID groups. The FTSP capacity is expanded in units of RAID
groups. Add RAID groups with the same specifications (RAID level, drive type, and number of
member drives) as those of the existing RAID groups.
Fujitsu Storage ETERNUS DX100 S4/DX200 S4, ETERNUS DX100 S3/DX200 S3 Hybrid Storage Systems Design Guide (Basic)
Chunk
Chunk
SAS disk
FTSP (Middle tier)
FTRP (Parent pool)
50
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FTV
Nearline SAS disk
FTSP (Low tier)
: RAID group
P3AM-7642-32ENZ0