HP StorageWorks P2000 HP StorageWorks P2000 G3 MSA System SMU Reference Guide - Page 54

Configuring a volume, Changing a volume's name or OpenVMS UID, Changing a volume's cache settings

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To configure DSD for a vdisk 1. In the Configuration View panel, right-click a vdisk and select Configuration > Configure Vdisk Drive Spin Down. 2. Set the options: • Either select (enable) or clear (disable) the Enable Drive Spin Down option. • Set the Drive Spin Down Delay (minutes), which is the period of inactivity after which the vdisk's disks and dedicated spares automatically spin down, from 1-360 minutes. If DSD is enabled and no delay value is set, the default is 15 minutes. A value of 0 disables DSD. 3. Click Apply. If you are enabling DSD, a warning prompt appears; to use DSD, click Yes; to leave DSD disabled, click No. When processing is complete a success dialog appears. 4. Click OK. Configuring a volume Changing a volume's name or OpenVMS UID To change a volume's name 1. In the Configuration View panel, right-click a volume and select Configuration > Modify Volume Name. 2. Enter a new name. A volume name is case sensitive and cannot already exist in a vdisk. A name cannot include a comma, double quote, or backslash. 3. Click Modify Name. The new name appears in the Configuration View panel. To change a volume's OpenVMS UID 1. In the Configuration View panel, right-click a volume and select Configuration > Modify Volume Name. 2. Enter a number in the range 1-32767 to identify the volume to the OpenVMS host. 3. Click Modify UID. Changing a volume's cache settings CAUTION: • Only disable write-back caching if you fully understand how the host operating system, application, and adapter move data. If used incorrectly, you might hinder system performance. • Only change read-ahead cache settings if you fully understand how the host operating system, application, and adapter move data so that you can adjust the settings accordingly. To change a volume's cache settings 1. In the Configuration View panel, right-click a volume and select Configuration > Modify Volume Cache Settings. 2. In the main panel, set the read-ahead cache options: • Write Policy. Select write-back or write-through. The default is write-back. • Write Optimization. Select Standard or Super Sequential. The default is Standard. • Read Ahead Size. Select Default, a specific size (64, 128, 256, or 512 KB; 1, 2, 4, 8, 16, or 32 MB), Maximum, or Disabled. 3. Click Modify Cache Settings. 54 Configuring the system

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54
Configuring the system
To configure DSD for a vdisk
1.
In the Configuration View panel, right-click a vdisk and select
Configuration > Configure Vdisk Drive
Spin Down
.
2.
Set the options:
•
Either select (enable) or clear (disable) the
Enable Drive Spin Down option
.
•
Set the
Drive Spin Down Delay (minutes)
, which is the period of inactivity after which the vdisk's
disks and dedicated spares automatically spin down, from 1–360 minutes. If DSD is enabled and
no delay value is set, the default is 15 minutes. A value of 0 disables DSD.
3.
Click
Apply
. If you are enabling DSD, a warning prompt appears; to use DSD, click
Yes
; to leave DSD
disabled, click
No
. When processing is complete a success dialog appears.
4.
Click
OK
.
Configuring a volume
Changing a volume's name or OpenVMS UID
To change a volume's name
1.
In the Configuration View panel, right-click a volume and select
Configuration > Modify Volume Name
.
2.
Enter a new name. A volume name is case sensitive and cannot already exist in a vdisk. A name
cannot include a comma, double quote, or backslash.
3.
Click
Modify Name
. The new name appears in the Configuration View panel.
To change a volume's OpenVMS UID
1.
In the Configuration View panel, right-click a volume and select
Configuration > Modify Volume Name
.
2.
Enter a number in the range 1–32767 to identify the volume to the OpenVMS host.
3.
Click
Modify UID
.
Changing a volume's cache settings
CAUTION:
•
Only disable write-back caching if you fully understand how the host operating system, application,
and adapter move data. If used incorrectly, you might hinder system performance.
•
Only change read-ahead cache settings if you fully understand how the host operating system,
application, and adapter move data so that you can adjust the settings accordingly.
To change a volume's cache settings
1.
In the Configuration View panel, right-click a volume and select
Configuration > Modify Volume Cache
Settings
.
2.
In the main panel, set the read-ahead cache options:
•
Write Policy. Select write-back or write-through. The default is write-back.
•
Write Optimization. Select Standard or Super Sequential. The default is Standard.
•
Read Ahead Size. Select Default, a specific size (64, 128, 256, or 512 KB; 1, 2, 4, 8, 16, or 32
MB), Maximum, or Disabled.
3.
Click
Modify Cache Settings
.