FUJITSU Disk Storage System DX60 - Manual (Page 44)

Chapter 3 Setup
3.2 Eco-mode
ETERNUS DX60 S2 Disk storage system User’s Guide -Operation-
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Copyright 2012 FUJITSU LIMITED P3AM-5512-03ENZ0
The following hierarchical storage management software can be also linked with Eco-mode.
When using the Eco-mode function with these software, an Eco-mode disk operation schedule
does not need to be set, since these software turns on the disk motors when stopped disks are
accessed.
• IBM Tivoli Storage Manager for Space Management
• IBM Tivoli Storage Manager HSM for Windows
• Dynamic Storage Tiering (DST) function in Symantec Veritas Storage Foundation
The restrictions and notes on using Eco-mode are described below.
For details on the Eco-mode procedure, refer to "ETERNUS Web GUI User's Guide" or
"ETERNUS CLI User's Guide".
• To set Eco-mode, use ETERNUS Web GUI, ETERNUS SF Storage Cruiser, or ETERNUS SF
AdvancedCopy Manager (hereinafter, referred to as Storage Foundation Software ETERNUS
SF).
• Eco-mode cannot be used for the following disks:
- System disks
- Hot spares
• Disk motors in the following RAID groups are not stopped by the Eco-mode schedule:
- RAID groups that contain a system disk
- RAID groups in which no volumes are registered
- RAID groups in which SDPVs are registered
• The operation time of disks varies depending on the Eco-mode schedule and the disk access.
- Access to a stopped disk outside of the scheduled operation time period causes the motor
of the stopped disk to be spun up, allowing normal access in about one to three minutes.
When a set time elapses since the last access to a disk, the motor of the disk is stopped.
- If a disk is activated from the stopped state more than a set amount of times in a day, the
Eco-mode schedule is not applied and disk motors are not stopped by the Eco-mode.