5. Functions <Power Saving Function (1)>
(1) Power Saving Function: MAID (Massive Array of Inactive Disks) Technology
Power Saving Function (MAID technology) reduces power consumption by turning off the motor power
of unused physical disk in backup volumes. The operation of disks, spare disks, and unassigned disks
in a pool can be controlled according to the status of volume usage which is specified by the logical
disks. By controlling the start/stop operation of the unused disks, the power function provides the
fundamental ability to support power saving operations in business.
StoragePowerConserver, which is bundled in M-Series Storage, can stop unused disks and hot spare
disks. Power saving function requires Storage Manager and Storage Control Command when
performing the following operations.
- Start/Stop volume usage
- Start/Stop pool operation
- Set power saving mode for each pool
n
Example: M110 Configuration
66
MAID
技術
～
Massive array of Inactive Disks
～
MAID Technology
Massive Array of Inactive Disks
Business
Server
DDR
M110
Backup Server
Storage Manager Suite
Management
Server
Client
Storage Control Command
(Power Control)
Storage Manager Express
Access Control
Storage Power Conserver
LAN
Business volume
Operating
Pool
Operating
Pool
Backup volume
Dormant
Pool
Copying
Pool
Reduce Power
Consumption
Max.30%
Existing
：
Power is always “ON”
for backup volume
Backup operation
Time
HDD motor
power supply
ON
MAID : Power is “ON” only at
operating backup
OFF
Backup operation
Time
OFF
ON
HDD motor
power supply
ON
ON
NEC Confidential
