Table A.2 Relationship Between SDV Operation and Express Function
SDV Operation Express Function
Monitoring SDV capacity acsdv stat
Initialize SDV acsdv init
Monitoring SDV Capacity
If an SDP is not used, the SDV should be monitored on a periodic basis to ensure that adequate remaining capacity leeway is
maintained.
Initializing SDV
- Even if no copy sessions are running, programs may write data to SDV. If SDV capacity becomes large, the "Initialize SDV" operation
should be performed with ETERNUS Web GUI or ETERNUS CLI.
- When copy session is running, space for SDV or SDP used by the copy session is decreased. In this case, amount of maintaining
data may be decreased.
Note that when a Snap Data Volume is initialized, any existing data on it will become inaccessible, so this data should be backed
up beforehand, using OS commands.
A.3.4 SDP operation
Table A.3 Relationship Between SDP Operation and Express Function
SDP Operation Express Function
Monitoring SDP capacity acsdv poolstat
Monitoring SDP Capacity
If an SDP is used, the SDP should be monitored on a periodic basis to ensure that adequate remaining capacity leeway is maintained.
If the allocatable SDP capacity runs short, this is indicated by e-mail/SNMP Trap notification.
A.4 Eco-mode
Eco Mode based on MAID (Massive Arrays of Idle Disks) can be configured for ETERNUS Disk storage systems.
Performing either of the following controls during a period of time of not accessing disk drives can reduce power consumption, leading
to the reduction of loads on environments.
a. Spindle rotation control of disk drives
b. Power control of disk drives
The above "b" is recommended. It can reduce power consumption more effectively than the above "a".
The devices that support "b" are shown in "Table A.4 Devices That Support Power Control of Disk Drives".
Table A.4 Devices That Support Power Control of Disk Drives
Device Name Firmware Version
ETERNUS DX60 S3 All versions
ETERNUS DX100 S3/DX200 S3 V10L20 or later
Express can monitor the Disk storage systems where the Eco-mode has been enabled.
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