Table 26 Eco-Mode Specifications - Fujitsu ETERNUS DX100 S4 Design Manual

2. Basic Functions
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 ETER-
NUS CLI. The operation 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 26 Eco-mode Specifications

Item
Number of registrable sched-
ules
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.
*2: Self Encrypting Drives (SEDs) are also included.
Fujitsu Storage ETERNUS DX100 S4/DX200 S4, ETERNUS DX100 S3/DX200 S3 Hybrid Storage Systems Design Guide (Basic)
Description Remarks
64 Up to 8 events (during disk operation) can be set for each
schedule.
30 minutes (de- Monitoring time can be set from 10 to 60 minutes.
fault)
This setting can only be changed by users with the Mainte-
nance Operation policy.
25 (default) 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.
This setting can only be changed by users with the Mainte-
nance Operation policy.
SAS disks (*2) SSD is not supported.
Nearline SAS disks
76
Copyright 2023 Fujitsu Limited
P3AM-7642-32ENZ0