Cisco SN 5400 Series Storage Routers

The term SN 5400 is used generically throughout this document to refer to any storage router product in the SN 5400 family (SN 5428-2 or SN 5428). There is a separate Frequently Asked Question (FAQ) document for each iSCSI driver and the SN 5400 itself. Typical subjects covered in these FAQs are installation questions, system requirements, and product compatibility.

This document was originally written for version 3.1.1 of the HP-UX 11.0 driver. The majority of this information is applicable to newer or older versions of the driver. There may, however, be slight operational differences between driver versions, which may result in behaviors inconsistent with what is described in this document.

A. The driver version currently running on the HP-UX system can be found by issuing the swlist or iscsid -v commands.

A. The driver has been designed to work in all uniprocessor and multiprocessor environments. Systems with more than four processors have not been tested, however, there are no known limits in the driver that would prevent it from working in such a configuration.

A. The driver has been designed to work with all host systems running HP-UX.

A. Not all versions of driver code are interoperable with all versions of the SN 5400 code. To determine if your driver is interoperable with your SN 5400, use the table below.

Driver Version	SN 5428 Version	Compatible
1.8.x	1.a.b	Yes
1.8.x	2.a.b	No
1.8.x	3.a.b	No
2.x.y	1.a.b	No
2.x.y	2.a.b	Yes
2.x.y	3.a.b	Yes
3.x.y	1.a.b	No
3.x.y	2.a.b	No
3.x.y	3.a.b	Yes

A. The Cisco driver has been written, tested, and qualified for use in a Cisco SN 5400 storage router environment. Any other use of this driver is not covered by any expressed or implied warranty by Cisco. Cisco will provide support for use of these drivers only in a Cisco SN 5400 environment.

A. The maximum number of LUNs per target is 8. Any devices with LUN IDs > 7 will be ignored by the driver and will not be configured in the system. This value is not user configurable.

A. The maximum number of targets is 15. Any devices with target IDs > 14 will be ignored by the driver and will not be configured by the driver. This value is not user configurable.

A. Yes. The ID assigned by the iSCSI driver to a particular iSCSI target configured on the SN 5400 will remain the same across reboots of the HP-UX system. This ID will remain the same unless the configuration on the SN 5400 is changed (DiscoveryIPAddress associated with GbE interface on the SN 5400 is changed or the iSCSI name of the target device on SN 5400 is changed), or the /etc/iscsi_bindings file on the HP-UX system has been manually edited.

A. All iSCSI driver error and event messages are sent to the syslog. The /etc/syslog.conf file is the main configuration file used by syslogd to determine how the various system messages are to be logged. Refer to the main page of the syslog.conf for a more detailed explanation of this process. If there are problems loading the iSCSI kernel module, diagnostic information will be placed in the /var/log/iscsi.log file.

A. The utility lsiscsi provides information about all the iSCSI devices available to the driver.

A. No. The iSCSI driver will automatically configure the new target in the system provided access is granted to the HP-UX host system for the new target.

A. The complete list, along with a detailed description for each of the iSCSI utilities, is provided in the iSCSI Command and Utilities section of the driver README file.