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is set to 3c (60 seconds), the Microsoft Windows default.

If the registry entry does not exist, you must create it. See your Windows documentation for

instructions.

If this registry entry is created or changed, reboot the Windows system for the new timeout value

to take effect.

OpenVMS

The maximum LUN timeout value is 120 seconds.

NOTE: OpenVMS tolerates the controller reboot that occurs at the end of the controller software

upgrade process. Disks on the controller display the Mount Verify status during the controller reboot

but return to Mounted status and resume I/O operations when the controller reboot is complete.

You do not need to change any OpenVMS default settings when performing an online controller

software upgrade.

Online controller software upgrades are supported in OpenVMS cluster environments where the

array is the cluster boot device.

Solaris

Solaris supports online controller software upgrades with the following driver timeouts:

• Sun drivers (qlc or emlxs): 60 seconds

• QLogic (qla2300): 60 seconds

• Emulex (lpfc): 60 seconds

Checking or changing timeouts

For Sun drivers, add the following lines to the /etc/system file:

set sd:sd_io_time=60

set ssd:ssd_io_time=60

For the QLogic driver, edit the /kernel/drv/qla2300.conf file and change the

hbax-link-down-timeout value to 60:

hba0-link-down-timeout=60;

For the Emulex driver, edit the /kernel/drv/lpfc.conf file and change the linkdown-tmo

value to 60:

linkdown-tmo=60;

VMware

VMware ESX (Hypervisor) does not time I/O for a guest operating system. Therefore the SCSI

timeouts on commands issued by each VMware guest (Linux, Windows, Solaris) are the timeouts

set for these systems.

Xen Citrix

For Xen Citrix, (except for NFS SR timeouts because Citrix XenServer 5.0 mounts using software

with nondefault timeout values) use the values described in “Linux Red Hat and SUSE” (page 28).

To check or set Xen Citrix parameters, use the set_parm executable located in the

/opt/hp/<driver>

directory. When executed, the options to change timeout values are displayed.

30 Preparing for the upgrade

HP 4400 User Manual

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