The following ETERNUS disk storage systems have an Eco-mode which controls the ON/OFF status for a disk drive spindle rotation based on MAID (Massive Arrays of Idle Disks) technology.
By stopping the spindle rotation at times when there is no disk drive access, it is possible to cut power consumption and provide an even more eco-friendly environment.
Storage device name | Firmware version |
|---|---|
ETERNUS DX60/DX80 | All versions |
ETERNUS2000 models 50, 100 and 200 | V10L50 or later |
ETERNUS4000 models 300 and 500 | V11L50 or later |
ETERNUS4000 models 400 and 600 | All versions |
ETERNUS8000 models 700, 900, 1100 and 2100 | V11L50 or later |
ETERNUS8000 models 800, 1200 and 2200 | All versions |
In this software, the following functionality is provided for the above ETERNUS disk storage systems.
The Eco-mode can be controlled via GUI operations in the administrative client or by executing the storageadm command in the administrative server.
See
For details, refer to "6.1.13 How to control the Eco-mode".
Among all disks loaded in the ETERNUS disk storage system, the disks that "Motor Status" is not "Idle" are displayed as the "number of active disks".
By using the performance information for the number of active disks, the effects of energy-saving operations can be easily verified.
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The amount of power used by an ETERNUS disk storage system device as a whole is displayed as "Power consumption".
The peripheral temperature (fan intake temperature) of an ETERNUS disk storage system is displayed as "Temperature".
By using the performance information for power consumption, the effects of energy-saving operations can be easily verified.
By using the performance information for temperature, the air-conditioning effects at the device periphery can be easily verified.
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Concerns in storage system operation when using Eco-mode
There are following concerns when using Eco-mode in storage system operation.
The Eco-mode can be controlled for each RAID group. Therefore, when different transactions (type, online time, etc.) use a RAID group, the disk drives of its RAID group may not be able to be stopped depending on the operating policy of the transaction. Please consider the relation between RAID group and transactions in the design of the storage system operation using Eco-mode.
The Eco-mode is not available for the following RAID groups.
A RAID group for which the system disk is included
A RAID group for which it is set in the NAS area
A RAID group for which the mainframe volumes, MVV volumes or MVV Concatenation volumes are registered
A RAID group for which no volumes are registered
A RAID group that includes an SSD
A RAID group used by Thin Provisioning function.
The ETERNUS disk storage system stops a disk drive after confirming that its disk drive is not accessed within a certain period of time (30 minutes). Therefore, time more than its period is needed until the disk drive stops actually even if the "stop request" in this software is executed.
The ETERNUS disk storage system does not stop a disk drive while the configuration of the RAID group or volume is changed and the Advanced Copy to access to its disk drive is done. Therefore, the disk drives may not be stopped even if the "stop request" in this software is executed. The disk drives will stop when the procedure is completed in the ETERNUS disk storage system.
When it is accessed to the stopped disk drive, the ETERNUS disk storage system starts its disk drive rotation. But, a few minutes (about thee minutes) is needed until the disk drive becomes the accessible status.
When the number of the starting disk drive rotation exceeds the number of certain times (three times), the ETERNUS disk storage system judges that its disk drive is used with high frequency and does not stop its disk drive rotation. Therefore, even if the "stop request" in this software is executed, after the disk drive status changes from "Idle" to "Active" and there is no access to its disk drive, its disk drive status may not change to "Idle".
The number of the starting disk drive rotation per one day is cleared to zero when time of ETERNUS disk storage system becomes 00:00.
