Figure 24 Ftv Configuration; Table 26 The Maximum Number And The Maximum Capacity Of Ftsps - Fujitsu ETERNUS AF S3 Series Design Manual

2. Basic Functions
Operations Optimization (Deduplication/Compression and Storage Virtualization)
Figure 24 FTV Configuration
• 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.
The following table shows the maximum number and the maximum capacity of FTSPs that can be registered
in an ETERNUS AF.
Table 26 The Maximum Number and the Maximum Capacity of FTSPs
Item
Maximum number of Flexible Tier Pools
Maximum number of Flexible Tier Sub Pools (*1)
Maximum capacity of the Flexible Tier Sub Pools
(*2)
Total capacity of the Flexible Tier Volumes (*3)
*1: The maximum total number of Thin Provisioning Pools and FTSPs.
Chunk
RAID6
FTSP (High tier)
FTRP (Parent pool)
FTV
Chunk
RAID1+0
FTSP (Middle tier)
ETERNUS AF150 S3 ETERNUS AF250 S3
12 24
12 132
4,096TB 6,144TB
4,096TB 6,144TB
57
: RAID group
ETERNUS AF650 S3
64
256
24,576TB
24,576TB
Design Guide