HP 9000 Virtual Library System - Manual (Page 45)

4 Storage Configuration
This section describes how to configure the storage pool policy and add or remove storage as
needed after the nodes have been configured.
Managing VLS Capacity
There are several ways to manage the capacity of your system:
•
Increase the number of VLS nodes
•
Increase the number of VLS capacity enclosures. See Adding VLS Capacity .
•
Reduce the number of VLS disk array enclosures. See Removing VLS Capacity .
•
Create storage pools. See Configuring the Storage Pool Policy .
Adding VLS Capacity
Add capacity by increasing the number of VLS9200 capacity enclosures in your VLS system. New
to the VLS family is the ability to purchase individual capacity enclosures instead of purchasing a
capacity kit containing an array. (An array contains one base enclosure and three capacity
enclosures.)
Each base enclosure can support three capacity enclosures so purchase accordingly. For example,
if you have a base enclosure and one capacity enclosure, purchase 1–2 capacity enclosures. If
you have a base enclosure and two capacity enclosures, purchase one additional capacity
enclosure; for more capacity, purchase another base enclosure and up to three more capacity
enclosures.
Each VLS9200 node can support up to two arrays. If you intend to add base and capacity
enclosures that exceed that limit, purchase an additional node.
NOTE: The VLS sequentially numbers arrays as they are added, starting with Array 1. (Array
numbering previously began at 0. Starting at array 1 is new to VLS firmware 6.1.0.) Only add
one VLS array at a time so you can control the number assigned to each array.
NOTE: The Fibre Channel and Ethernet switches should be powered on before adding storage
capacity.
To add a VLS9200 disk array enclosure:
1.
Install the capacity licenses. See “Installing Additional Licenses” (page 48) .
Each base and capacity enclosure comes with its own capacity licenses (10 TB enclosures
require one license while 20 TB enclosures require two).
CAUTION: If a base or capacity enclosure is added to a VLS system without sufficient capacity
licenses installed, a capacity license violation will occur.
If the capacity license violation is detected during boot, this will disable the VLS storage
capacity, so that the VLS is unable to perform for read/write operations. VLS storage capacity
is re-enabled once the capacity license is installed on the VLS (without needing to reboot).
If the capacity license violation is detected when Discover Unconfigured Storage is selected,
this will prevent the new disk array enclosure from being added to the VLS. However, the VLS
will remain operational. When the capacity license is then installed, the new disk array
enclosure is automatically added to the VLS (without needing to reboot).
2. Install the base or capacity enclosure into the rack. See “Installing the Disk Array Enclosures
into a Rack” (page 22) .
3. Cable the enclosure to the VLS. See “Cabling Disk Array Enclosures” (page 26) .
Managing VLS Capacity 45