EMC QLA23xx, QLA22xx manual Problems and Solutions

B

Troubleshooting

Problems and Solutions

Problem	Error Message ID: 51 in event viewer when attempting to install
	multiple host access (for clustering) to the same EMC CLARiiON
	array storage group. The text of the message is:
	An Error was detected on device \Device\Harddisk<x>\DR<x>
	during a paging operation
Solution	Until host cluster software is installed, only a single host should
	access a storage group at a time. Refer to the EMC Support Matrix for
	supported host configurations.
Problem	EMC Primus case emc29097 — If using HBAs connected to both
	CLARiiON SPs, without PowerPath installed, duplicate LUNs will be
	visible in the Device Manager and Disk Manager. Only one instance
	of the LUN will be accessible, and all other matching mappings will
	be listed as Unknown, Unreadable and Unallocated.
Solution	This is normal behavior when multiple paths are available,
	PowerPath is not installed, and the initiator type is registered in
	PowerPath mode (array default depending on core code revision).
Problem	EMC Primus case emc69307 — When using QLogic HBAs in a
	Brocade fabric environment, after upgrading Brocade 3900-series
	switch firmware to 3.0.2m, the HBAs report repeated link errors, and
	intermittently lose fabric connectivity.
	PowerPath may report paths lost and then found in quick succession,
	and repeated Windows 2000 event log error entries for Link
	Down/Link Up events similar to the following:

Event ID: 11

Source: ql2300

Description: The driver detected a controller error on \Device\Scsi\ql2300x.

Data (words): offset 34 = 80120000 [ErrorCode: Link down error]

Event ID: 11

Source: ql2300

Description: The driver detected a controller error on \Device\Scsi\ql2300x.

Data (words): offset 34 = 80110000 [ErrorCode: Link up]

B-2 EMC Fibre Channel with QLogic HBAs in Windows Hosts