Fujitsu ETERNUS DX Disk Yapılandırma Kılavuzu - Sayfa 23

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Chapter 8

Setting Up XenServer

8.2

Turning On the Devices

The setting value for X depends on the ETERNUS DX/AF model. Refer to the following tables.

Driver parameter

ql2xmaxqdepth

*1: Recommended value = 1024 ¸ (number of Fibre Channel ports that are connected to a single CA

port) ¸ number of LUNs

(Round the result down)

Use the value of "8" if the actual result is lower. Use the maximum value if the actual result ex-

•

ceeds the maximum value for the driver.

•

To achieve maximum system performance, this value can be changed according to the server

load and the peak operating times.

•

The number of simultaneous command executions per CA port for the ETERNUS DX/AF is limited

to 1024. This value is used by multiple servers that share the CA port. A maximum of 1024 com-

mands can be executed per CA port.

Example (when "8" is set for "ql2xmaxqdepth")

options qla2xxx ql2xmaxqdepth=8

•

After the driver parameter settings are complete for XenServer 7.0, create an initial RAM disk.

Create an initial RAM disk image file to match the kernel being used. Refer to the QLogic Fibre

Channel card manual for details on the creation method.

•

Creating an initial RAM disk is not required for XenServer 7.1 and later.

Shut down the server.

After the driver parameter settings are complete, shut down the XenServer host, and then connect the

ETERNUS DX/AF to the XenServer host with cables.

8.2

Turning On the Devices

To turn on the connected devices, use the following procedure:

Turn on the Fibre Channel switch power (if used).

Check that the Ready LED (or equivalent) is lit on the Fibre Channel switch.

Turn on the ETERNUS DX/AF.

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

Setting value

Arbitrary (*1)

(Up to 1024 for each FC port of the ETERNUS DX/AF)

XenServer

P3AM-4572-19ENZ0