• Example 2
Here, we will establish 2 UDVs in one VG. One of the UDV is shared Cache Volume and the other uses
dedicated Cache Volume.
First, the dedicated Cache Volume must be established, which will help establishing the UDV and then
delete them.
Every UDV is associated with a special CV (cache volume) to perform data transmission. Each CV
can have different Cache Volumes. If no special requests are placed in UDVs, the system will use
shared Cache Volume, or the user can manually establish a dedicated Cache Volume for a single UDV.
The performance of the dedicated Cache Volume will not be affected by other UDVs accessing data.
The capacity for all Cache Volumes is determined by the capacity of RAM, and it will automatically be
configured as shared. To configure a dedicated Cache Volume, first divide shared Cache Volume and
give to dedicated Cache Volume to use. Refer to steps below:
1) Establish dedicated Cache Volume
a. Select “/ Volume config / Cache volume”.
b. If there isn’t enough space to establish a new dedicated Cache Volume, first click and select the
“
” button in the capacity field and press the button to divide shared Cache Volume. After
reconfiguring the capacity, click and select “
” to go back to Cache Volume.
c. Click and select “
” to enter configuration screen.
d. Enter the capacity and click and select “
”.
e. The process is completed and the configuration for a new direct Cache Volume is completed.
Hint: The minimum capacity for shared Cache Volume is 40MB and the minimum capacity for dedicated Cache
Volumes is 20 MB.
2) Establish VG (Volume Group)
Refer to Step 1 in Example 1 to establish a VG.
3) Establish UDV (User Data Volume).
Refer to Step 2 in Example 1 to establish a UDV.
To establish a UDV with dedicated Cache Volume, refer to steps below:
a. Select “/ Volume config / User data volume”.
b. Click and select “
“.
c. First, enter a name for the UDV and select a name for VG and then select the dedicated Cache
Volume established in step 1. Next, enter the capacity of UDV and determine the capacity, block
capacity, Read/Write and also configure Priority. Finally click and select “
”.
d. The process is completed and a UDV using dedicated cache has been established.
4) Add LUN for UDV.
Please refer to step 3 in example 1 to add LUN.
5) Configure dedicated hard disk
To configure a dedicated hard disk, follow the steps below:
Introduction to User Interface
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