Citrix Systems 6 manual Upgrading XenServer with StorageLink SRs, Creating a Shared StorageLink SR

For more information on using CSL SR types with XenCenter, see the XenCenter online help.

Because the CSL SR can be used to access different storage arrays, the exact features available for a given CSL SR depend on the capabilities of the array. All CSL SRs use a LUN-per-VDI model where a new LUN is provisioned for each virtual disk (VDI).

CSL SRs can co-exist with other SR types on the same storage array hardware, and multiple CSL SRs can be defined within the same resource pool.

CSL supports the following array types:

•NetApp/ IBM N Series

Important:

When using NetApp storage with StorageLink on a XenServer host, Initiator Groups are automatically created for the host on the array. These Initiator Groups are created with Linux as the Operating System (OS).

Manually adding Initiator Groups with other OS values is not recommended.

•Dell EqualLogic PS Series

Important:

The Dell EqualLogic API uses SNMP for the communication. It requires SNMP v3 and therefore requires firmware v5.0.0 or greater. If your EqualLogic array uses earlier firmware, you will need to upgrade it to v5.0.0. The firmware can be downloaded from the Dell EqualLogic Firmware download site at https://www.equallogic.com/support/download.aspx?id=1502 (note that you need a Dell Support account to access this page).

After a firmware upgrade to v5.0.0 or later, you will need to explicitly reset the administrator (grpadmin) password. This is necessary so that the password can be converted to the necessary SNMPv3 authentication and encryption keys.

To reset the password, log in to the array via telnet or ssh, and run the following command:

account select grpadmin passwd

At the prompt, enter the new password; at the next prompt, retype it to confirm. The password can be the same as the original password.

Upgrading XenServer with StorageLink SRs

If you are upgrading pools (from XenServer version 5.6 or later to the current version of XenServer) that contain StorageLink Gateway SRs, note that only the following adapters are supported: NetApp and Dell EqualLogic. If the pool contains VMs running on any other types of StorageLink Gateway SRs, do not upgrade the pool.

Note:

Before you upgrade, you will need to first detach any supported StorageLink Gateway SRs and then, once you have upgraded, re-attach them and re-enter your credentials (if you are using XenCenter, the Rolling Pool Upgrade wizard will perform this automatically).

Warning:

If the default SR in the pool you wish to upgrade is a supported StorageLink SR, you must set the default to an SR of a different type (non-StorageLink). Any VMs suspended on a StorageLink Gateway SR by the Rolling Pool Upgrade wizard will not be resumable after the upgrade.

Creating a Shared StorageLink SR

The device-configparameters for CSL SRs are:

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