Environmental Burden Reduction; Eco-Mode; Figure 5.16 Eco-Mode Mechanism - Fujitsu ETERNUS DX80 S2 Overview

Chapter 5 Basic Functions

5.4 Environmental Burden Reduction

5.4 Environmental Burden Reduction
The ETERNUS DX Disk storage system has energy and power savings that reduce CO
burden on the environment.
5.4.1

Eco-mode

Using Eco-mode allows the rotation of disks that have limited access time to be stopped for specified periods
to reduce power consumption.
Disk spin-up and spin-down schedules can be set for each RAID group, Thin Provisioning Pool (TPP) (*1), or
Flexible Tier Pool (FTRP) (*2). These schedules can also be set to allow backup operations.
*1: A Thin Provisioning Pool is a virtual area that is created when the Thin Provisioning function is used. For details on
the Thin Provisioning function, refer to
*2: An FTRP is a layered area that is created when the Flexible Tier function is used. The pool can have up to three layers.
For details on the Flexible Tier function, refer to
The Eco-mode concept is shown below:

Figure 5.16 Eco-mode mechanism

Working Phase
(12:00 to 24:00)
Online disks
Nearline disks
Disks stopped
"6.1.1 Thin Provisioning" (page
Disk spin-up
12
Off
PM
Backup
ETERNUS DX80 S2/DX90 S2 Disk storage system Overview
Copyright 2013 FUJITSU LIMITED
77).
"6.1.2 Flexible Tier (Automatic Storage Layering)" (page
Disk spin-down
Backup Phase
12
Off On
5
AM
(0:00 to 5:00)
Online disks
Nearline disks
Disks spinning
Control linked to usage
68
emissions and lessen the
2
78).
Working Phase
12
Off
AM
(5:00 to 12:00)
Online disks
Nearline disks
Disks stopped
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