Operations Optimization (Virtualization/Automated Storage Tiering)
Thin Provisioning
The Thin Provisioning function has the following features:
•
Storage Capacity Virtualization
The physical storage capacity can be reduced by allocating the virtual drives to a server, which allows efficient
use of the storage capacity. The volumes more than the capacity of all the installed drives can be allocated by
setting the capacity required for virtual volumes in the future.
•
TPV Balancing
I/O access to the virtual volume can be distributed among the RAID groups in a pool by relocating and
balancing the physical areas allocated to the virtual volume.
•
TPV/FTV Capacity Optimization (Zero Reclamation)
Data in physically allocated areas are checked in blocks and unnecessary areas (areas where 0 is allocated to
all of the data in each block) are released to unallocated areas.
Caution
If the Thin Provisioning function is used, the drives must be installed as follows for the maximum pool
capacity. The drive type and capacity are not restricted.
Table 26
Maximum Pool Capacity and Required Number of Drives
Model
Maximum pool
capacity
Number of
installed drives
Drive installation location
Enclosure
Slot location
ETERNUS DX60 S5
ETERNUS DX100 S5
ETERNUS DX200 S5
ETERNUS DX500 S5
— (*1)
2
CE#0
Slot#0 and Slot#1
ETERNUS DX600 S5
Up to 1PB
2
CE#0
Slot#0 and Slot#1
1.5PB or more
4
CE#0
Slot#0 to Slot#3
ETERNUS DX900 S5
Up to 1PB
2
CE#0
Slot#0 and Slot#1
2PB
4
CE#0
Slot#0 to Slot#3
4PB
8
CE#0
Slot#0 to Slot#3
DE#04
Slot#0 to Slot#3
8PB or more
16
CE#0
Slot#0 to Slot#7
DE#04
Slot#0 to Slot#7
*1:
Regardless of the maximum pool capacity, the required number of drives is fixed.
2. Basic Functions
Operations Optimization (Virtualization/Automated Storage Tiering)
58
Design Guide
Содержание ETERNUS DX S5 Series
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