8100 Updating Product Software Guide (XCS 6.250) (5697-1716, February 2012)

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

to take effect.

NetWare

No changes are needed for NetWare operating system timeouts. The default values from HBA

are:

• Login retry count: 8

• Port down retry count: 16

• Link down timeout: 8

OpenVMS

The maximum LUN timeout value is 120 seconds.

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

update 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 upgrades with the following driver timeouts:

• Oracle Drivers (qlc or emlxs): 60 seconds

• QLogic (qla2300): 60 seconds

• Emulex (lpfc): 60 seconds

Checking or changing timeouts

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

set sd:sd_io_time = 60

set ssd:ssd_io_time = 60

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

hbax-link-down-timeout value to 60 as follows:

hba0-link-down-timeout=60;

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

60 as follows:

linkdown-tmo=60;

Tru64

Tru64 has a 60 second timer for media command timeouts. In most cases, up to 5 retries can occur

within the kernel's I/O stack, which results in a 5–6 minute window before I/O is returned to the

file system. No changes should be made to any Tru64 settings when performing an online controller

software upgrade.

Online controller software upgrades are supported in Trucluster 4–node environments where the

array is the cluster boot device.

Managing host I/O timeouts for an online upgrade 29