Operations Optimization (Virtualization/Automated Stor-
age Tiering)
A single controller configuration differs from a dual controller configuration in the following
ways:
•
The Thin Provisioning function cannot be used.
•
The Flexible Tier function cannot be used.
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 instal-
led 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 relocat-
ing and balancing the physical allocation status of 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.
2. Basic Functions
Operations Optimization (Virtualization/Automated Storage Tiering)
41
Fujitsu Storage ETERNUS DX100 S4/DX200 S4, ETERNUS DX100 S3/DX200 S3 Hybrid Storage Systems
Design Guide (Basic)
Copyright 2023 Fujitsu Limited
P3AM-7642-32ENZ0
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