Under the power-saving operation, the ETERNUS Disk storage system Eco-mode functionality is used. The processing time of a specific disk drive (RAID group unit) is managed according to the schedule, and the disk drive's motor is stopped if there is no access to the disk for a certain period of time (the period can be set at 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes and 60 minutes). In this way, power-saving can be achieved.
If there is an access to the disk after the motor has stopped, the disk drive is started again and the access is enabled in one to three minutes' time.
Moreover, the number of accesses is judged to be high if the number of operations of the disk drive in one day exceeds the set range (one to five times can be set). In this situation, the echo mode is not applied, and the operation will continue.
It is possible to save power consumption under the following operations.
Backup management
Snapshot type high-speed backup (OPC) with no access to the backup volume for a long period of time.
Suspend/Resume functionality of synchronous type high-speed backup (EC, REC) with a long suspend time.
Replication management
Snapshot type high-speed replication (OPC) with no access to the copied volume as the backup destination for a long period of time.
Suspend/Resume functionality of synchronous type high-speed replication with a long suspend time.
