This section explains how to share disks between multiple L-Servers.
Prerequisites
Sharing of disks is possible when the managed servers and storage are shared using Fibre Channel connections.
First disk (System Volume) cannot be shared between L-Servers.
Control of simultaneous access to shared disks is performed by other applications, such as cluster systems.
Disk sharing between L-Servers is only possible for physical L-Servers that are use SAN boot.
For details about the virtualization type by which sharing the disk is supported, refer to "Table 17.1 Available Operations".
Installation
Use the following procedure to create new L-Servers and to share disks between L-Servers:
Create an L-Server (First server)
Create an L-Server, referring to "Chapter 16 Creating L-Servers".
When creating an L-Server using the command, execute the rcxadm lserver create command.
For details on the rcxadm lserver create command, refer to "3.6 rcxadm lserver" and "15.3.1 Definition Information for Physical L-Servers (XML)" in the "Reference Guide (Command/XML) CE".
Creating an L-Server (For a second or later server)
Create an L-Server. In this case, select the following:
Select the disk to allocate to the L-Server.
Select [Allocated] for [Allocation Status].
Select the first L-Server created in "Creating an L-Server (For a first server)" as "Allocated L-Server".
When specifying these items as search conditions, connected shared disks can be filtered. For details, refer to "16.2.3 [Disk] Tab".
Attaching Shared Disks
Use the following procedure to attach disk resources to L-Servers created in advance and to share the disks:
Attaching shared disks to the first L-Server
To attach disks, use the procedure of "Attach new disks" in "17.2.3 Attaching and Detaching Disks".
Attaching disks to share for a second (or later) L-Server
To attach disks, use the procedure of "Attach new disks" in "17.2.3 Attaching and Detaching Disks". In this case, select the following:
Select the disk to allocate to the L-Server.
Select "Allocated" for "Allocation Status".
Select the first L-Server to which the shared disks have been attached as the "Allocated L-Server".
When specifying these items as search conditions, connected shared disks can be filtered. For details, refer to "16.2.3 [Disk] Tab".
