Fujitsu ETERNUS DX Disk Configuratiehandleiding - Pagina 12

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Chapter 3

Notes

Note the following issues when connecting the ETERNUS DX/AF to a server.

3.1

To ensure reliable access to ETERNUS DX/AF storage systems, multipath configuration is recommended.

•

Setting up multiple access paths between the server and the ETERNUS DX/AF storage systems, then using

•

the XenServer multipath, provides improved access redundancy.

Enable the virtualization support functions (Intel VT or AMD-V) of the server before installing XenServer.

•

For details on the settings, refer to the relevant manual of the server to be used.

Install XenServer when the ETERNUS DX/AF is not connected to the server.

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The ETERNUS Multipath Driver does not need to be installed on the XenServer Virtual Machine. The Xen-

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Server multipath provides path redundancy.

When multiple paths are used, a multipath driver must be set. If a multipath driver is not set, the XenServ-

•

er multipath does not perform proper load balancing for the ETERNUS DX/AF.

Before setting a multipath configuration, create Storage Repositories for all the LUNs that exist in the

•

ETERNUS DX/AF.

3.2

If a path error occurs in a multipath configuration using XenServer, the status of the failed multipath may

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not be displayed. The status is displayed again when the failed path recovers.

When XenServer is managed and operated with XenCenter, multipath errors may not be detected properly

•

by XenCenter. When checking multipath status, also check the status on the XenServer host side.

3.3

Host Response must be set before the ETERNUS DX/AF is connected to the XenServer host.

•

Even if the Eco-mode of the ETERNUS DX/AF is enabled for a multipath configuration with XenServer, disk

motors may not stop according to the Eco-mode settings.

FUJITSU Storage ETERNUS DX, ETERNUS AF Configuration Guide -Server Connection- (Fibre Channel) for Citrix

XenServer

P3AM-4572-19ENZ0