Flexible Tier
The Flexible Tier function automatically redistributes data in the
ETERNUS DX according to access frequency in
order to optimize performance and reduce operation cost. Storage layering is performed by moving frequently
accessed data to high speed drives such as SSDs and less frequently accessed data to cost effective disks with
large capacities.
Data is redistributed based on the performance information that is monitored and obtained by ETERNUS SF Stor-
age Cruiser. Using Nearline SAS disks can reduce the storage cost without resulting in any loss of performance.
Figure 11 Flexible Tier
ETERNUS DX
ETERNUS SF
Storage Cruiser
High speed tier
(Tier 1: SSD)
Medium speed tier
(Tier 2: SAS disks)
Low speed tier
(Tier 3: Nearline SAS disks)
Server
Frequently
acces
sed data
Infrequently
acces
sed data
Moving to a Nearline SAS disk
→ Initial disk cos
t is reduced
Moving to an SSD
→ Response time is shortened
Order
Monitor
SAS disks Nearline SAS disks
Time
SSDs
• Cost-effective data storage
• Response time reduction
• For frequently accessed data
• Priority on long term storage
• For saving infrequently
accessed data
Tier 1 Tier 2 Tier 3
Inf
or
mation value
3. Basic Functions
Operations Optimization (Virtualization/Automated Storage Tiering)
34
FUJITSU Storage ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems
Overview
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P3AM-7702-29ENZ0
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