Fujitsu ETERNUS DX60 S3 User Manual page 548

Chapter 5 RAID Group Management
5.7 Assign Eco-mode Schedule (RAID Group)
• The ETERNUS DX200F does not support this function.
• Eco-mode is not available for the following RAID groups:
- No volumes are created
- A Storage Migration path is created in the volume
- Configured by SSDs or SSD SEDs
- Registered as an REC Disk Buffer
- Registered as an EXCP
• RAID groups to which the Snap Data Pool Volumes (SDPVs) belong cannot be selected as the target for
drive motor management by the Eco-mode.
• When using Eco-mode, make sure to set the time/date correctly. If the time/date of the ETERNUS DX is
wrong, processes used for stopping and starting the drive motor cannot be performed per the Eco-mode
schedule.
• When the "External" (drive motor management by the Storage Foundation Software ETERNUS SF) is
selected, it can be changed to the Eco-mode schedule. But when the Eco-mode schedule is selected, it
cannot be changed to "External".
• If any of the following conditions occur when drive motors are stopped, the drive will be started even
when the drive motor is inactive. The Eco-mode schedule is re-enabled when the conditions listed have
finished. (*1)
- The status of the RAID group is other than "
- Functions that change the RAID group or the volume configuration are being performed
- Rebuild or copyback is being performed in the target RAID group
- LDE is being performed in the target RAID group
- Formatting is being performed in the volumes registered in the RAID group
- RAID migration is being performed in the volumes registered in the RAID group
- Advanced Copy is being performed in the volume registered in the RAID group (copy session status is
not "Suspend" or the phase is not "Tracking")
- Encryption is being performed in the volumes registered in the RAID group
- ODX Buffer volumes exist in the RAID group
- During maintenance
- A disk diagnosis or a RAID group diagnosis is being performed or G-List is being exported
- A module error related to the access paths of the controller modules and drives is detected
• Specify the same Eco-mode schedule for all of the RAID groups that configure a WSV. If a different Eco-
mode schedule is specified, activation of a stopped drive is required to accept the host access, and the
performance of the response may be reduced.
• If the server OS or software periodically accesses the ETERNUS DX, the drive motor may not stop even
when the Eco-mode is enabled.(*1)
*1: This not only affects the motor stoppage, but includes the cutting of the drives power as well.
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