Flexible Tier; Figure 11 Flexible Tier - Fujitsu ETERNUS DX500 S3 Overview

3. Basic Functions
Operations Optimization (Virtualization/Automated Storage Tiering)

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

Server
ETERNUS DX
ETERNUS SF
Storage Cruiser
Monitor
• Response time reduction
Order
• For frequently accessed data
High speed tier
(Tier 1: SSD)
Medium speed tier
(Tier 2: SAS disks)
Low speed tier
(Tier 3: Nearline SAS disks)
FUJITSU Storage ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems Overview
Copyright 2019 FUJITSU LIMITED
• Cost-effective data storage
Tier 1 Tier 2
SSDs SAS disks
Moving to an SSD
→ Response time is shortened
Frequently
accessed data
Infrequently
accessed data
Moving to a Nearline SAS disk
→ Initial disk cost is reduced
34
• Priority on long term storage
• For saving infrequently
accessed data
Tier 3
Time
Nearline SAS disks
P3AM-7702-29ENZ0