HP StorageWorks Enterprise Modular Library E-Series user guide (AH876-96001, October 2007)

Each of these topics is discussed in the following sections.

Examining FC port connection

Most hubs and switches have link indicators showing link status. When the interface controller is

connected and powered on, the link indicator appears solid. If it is not, examine the cabling or

connections.

To examine link

• Make sure that the library is not running any tasks before disconnecting any cables. D isconnect

and reconnect the FC cable. This procedure causes momentary activity of this indicator as

the link reinitializes.

• Make sure tha

t the cable type for the interface controller and the attached hub, H BA, or switch

are similar.

NOTE:

By default, the F C port speed is set to 2 Gbps for the e2400-FC 2Gb interface controller and to 4

Gbps for the e2400-FC 4Gb interface controller. Changes to the FC port speed must be manually

set, such as for 1 Gbps. If set incorrectly and the interface controller is plugged into a Loop or Fabric,

theunitcanreceiveframingerrors,whichcanbefoundinthetracelogs;theﬁber link light will

be off because of the incorrect FC link speed.

Examining the interface controller conﬁguration

To examine the interface con troller conﬁguration,makesurethat:

• The interface controller speed is set correctly.

• Theconnectiontypeissetcorrectly.

• The host is added to Secure Manager in Command View TL and given permission to communicate

with the library.

Examining devices

HP recommends using Command View TL to make sure that the devices are operating correctly.

Examining the host conﬁguration

In some cases, the FC HBA or host device driver may not be working properly. Check the conﬁguration of

these elements.

Check the release notes for the device driver to see if there are any speciﬁcissuesorarequired

conﬁguration. Also, make sure that you are using the current version of the HBA driver.

Older applications can have expectations about what constitutes a valid SCSI ID, and thus may not

correctly handle certain mappings. This is not an issue for the operating system or most applications.

However, some applications may exhibit difﬁculties addressing target IDs greater than 15 (16 and

higher). To resolve this situation in a direct-attach conﬁguration, conﬁgure the interface c ontroller to use

hard add ressing and set the AL_PA to a value that the HBA can map, with an ID less than 16.

Examining HBA device driver information

Review the HBA device driver Readme.txt ﬁle for conﬁguration speciﬁcs. An HBA may require a

different conﬁguration. HBAs t ypically come with utility programs to view or change their conﬁgurations.

Examining serial port conﬁguration

If you have problems connecting to the serial interface, make sure that the c on ﬁ guration of the terminal or

terminal emulation program is correct.

Maintaining the librar y