Table 17 Eco-Mode Specifications - Fujitsu ETERNUS DX60 S4 Design Manual

1. Function
Environmental Burden Reduction
For RAID groups with the following conditions, the Eco-mode schedule can be set but the disks motor cannot be
stopped or the power supply cannot be turned off:
• SDPVs are registered
ODX Buffer volumes are registered
•
If disk access occurs while the disk motor is stopped, the disk is immediately spun up and can be accessed within
one to five minutes.
The Eco-mode function can be used with the following methods:
Schedule control
•
Controls the disk motors by configuring the Eco-mode schedule on ETERNUS Web GUI or ETERNUS CLI. The op-
eration time schedule settings/management is performed for each RAID group and TPP.
External application control (software interaction control)
•
Disk motor is controlled for each RAID group on ETERNUS SF Software.
The disk motors are controlled by interacting with applications installed on the server side and responding to
instructions from the applications. Applications which can be interacted with are as follows:
ETERNUS SF Storage Cruiser
-
ETERNUS SF AdvancedCopy Manager
-
The following hierarchical storage management software can be also linked with Eco-mode.
When using the Eco-mode function with these products, an Eco-mode disk operating schedule does not need to
be set. A drive in a stopped condition starts running when it is accessed.
• IBM Tivoli Storage Manager for Space Management
IBM Tivoli Storage Manager HSM for Windows
•
Symantec Veritas Storage Foundation Dynamic Storage Tiering (DST) function
•
The following table shows the specifications of Eco-mode.

Table 17 Eco-mode Specifications

Item
Number of registrable schedules
Host I/O Monitoring Interval (*1)
Disk Motor Spin-down Limit Count
(per day)
Target drive
*1: The monitoring time period to check if there is no access to a disk for a given length of time and stop the
drive.
FUJITSU Storage ETERNUS DX60 S4, ETERNUS DX60 S3 Hybrid Storage Systems Design Guide (Basic)
Description
64
30 minutes (default)
25 (default)
SAS disks
Nearline SAS disks
59
Copyright 2019 FUJITSU LIMITED
Remarks
Up to 8 events (during disk operation) can be set for each
schedule.
Monitoring time can be set from 10 to 60 minutes.
The monitoring interval setting can be changed by users
with the maintenance operation privilege.
The number of times the disk is stopped can be set from
1 to 25.
When it exceeds the upper limit, Eco-mode becomes un-
available, and the disks keep running.
SSD is not supported.
P3AM-8992-14ENZ0