Fujitsu ETERNUS DX Disk Configuration Manual - Page 16

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Fujitsu ETERNUS DX Disk Configuration Manual
Chapter 6
Installing the iSCSI Software Initiator and Setting Up the Server
6.2

Setting Up the Server

6.2
Setting Up the Server
iSCSI connection settings depend on the CHAP authentication method. Perform the settings to match the
CHAP authentication to be used.
CHAP authentication method
None
Unidirectional CHAP authentication
Bidirectional CHAP authentication
6.2.1

Setting Up the Command Queue Depth

Set the number of commands allowed to be queued (command queue depth) on each LUN in the ETERNUS
DX storage systems from the LAN card. This setting optimizes the connection between the ETERNUS DX stor-
age systems and the server.
Model
ETERNUS DX
*1: Recommended value = 512 ¸ (number of iSCSI 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.
For HP-UX11iv3
•
Set the command queue depth using the disk device attribute "max_q_depth". The "max_q_depth" is set
using the "scsimgr" command.
Example:
-
Setting the command queue depth of disk20 to 8
# scsimgr save_attr -D /dev/rdisk/disk20 -a max_q_depth=8
Refer to the HP-UX manuals for details of the "scsimgr" command.
FUJITSU Storage ETERNUS DX Configuration Guide -Server Connection- (iSCSI) for HP-UX
Required settings
"6.2.1 Setting Up the Command Queue Depth" (page 16)
•
•
"6.2.2 Maximum Number of Volume Group Settings" (page 17)
"6.2.3 iSCSI Basic Settings" (page 17)
•
"6.2.1 Setting Up the Command Queue Depth" (page 16)
•
"6.2.2 Maximum Number of Volume Group Settings" (page 17)
•
"6.2.3 iSCSI Basic Settings" (page 17)
•
"6.2.4 Server Settings when CHAP Authentication is Used" (page 19)
•
"6.2.1 Setting Up the Command Queue Depth" (page 16)
•
•
"6.2.2 Maximum Number of Volume Group Settings" (page 17)
"6.2.3 iSCSI Basic Settings" (page 17)
•
•
"6.2.4 Server Settings when CHAP Authentication is Used" (page 19)
"6.2.5 Server Settings when Bidirectional CHAP Authentication is Used" (page
•
20)
Setting value
Command queue depth
Arbitrary (*1)
(Up to 512 for each iSCSI port of the ETERNUS DX)
16
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