Table Of Contents
Release Notes for Cisco iSCSI Driver Version 3.1.2 for Microsoft Windows
March 29, 2003
Note You can find the most current documentation on Cisco.com. This set of electronic documents may contain updates and modifications made after the hard-copy documents were printed.
These release notes support Cisco iSCSI Driver version 3.1.2 for Microsoft Windows.
For a list of software caveats that apply to version 3.1.2, see the "Caveats" section. The caveats are updated for every maintenance version and are located on Cisco.com and the Documentation CD-ROM.
These release notes describe the following topics:
The iSCSI Driver for Microsoft Windows provides an IP host with the ability to access storage through an IP network. The iSCSI driver uses the iSCSI protocol to transport SCSI requests and responses over an IP network between the IP host and a Cisco SN 5400 or MDS 9000 Series system.
Architecturally, the iSCSI driver combines with the IP host's TCP/IP stack, network drivers, and network interface cards (NICs) to provide the same functions as a SCSI or a Fibre Channel adapter driver with a host bus adapter (HBA).
The iSCSI driver provides a transport for SCSI requests and responses for storage devices; however, instead of providing a transport for directly attached devices, the driver transports the SCSI requests and responses between the IP host and a Cisco SN 5400 or MDS 9000 Series system via an IP network. The SN 5400 or MDS 9000 Series system, in turn, transports SCSI requests and responses between it and the storage devices attached to it.
Once the iSCSI driver is installed and started, the host proceeds with a discovery process for storage devices.
A more technical description of the driver's design and its features can be found in the readme file that accompanies the iSCSI driver in the downloaded driver archive file.
Note The iSCSI protocol is an IETF-defined protocol for IP storage (ips). For more information about the iSCSI protocol, refer to the IETF standards for IP storage at http://www.ietf.org.
This section describes the system requirements for version 3.1.2 and includes the following information:
Operating System Requirements
•The driver requires either Microsoft Windows XP Professional (no service packs are required), or Microsoft Windows 2000 Professional, Server, or Advanced Server with service pack 2 or later.
If service pack 2 is installed, the following hotfixes are required:
–Microsoft Hotfix Q302895 or Q248720 (Q248720 is preferred because the fix includes a performance enhancement)
–Microsoft Hotfix Q318271
–Microsoft Hotfix Q307939 (only required if the iSCSI Driver is running on a Microsoft Windows 2000 Advanced Server Cluster node)
These hotfixes do not appear on the Microsoft Hotfix website; you must specifically request them.
Note If service pack 3 is installed, the hotfixes are not required. Hotfixes Q302895, Q248720, Q318271 and Q307939 are all included in service pack 3.
To obtain the hotfixes, call Microsoft customer support at 1-800-936-4900 (or any Microsoft customer support phone number) and request the hotfix for the specific Knowledge Base (KB) article (Q302895 or Q248720, Q318271, or Q307939). You will be asked to supply an e-mail address. You will receive an e-mail message with a link to an FTP site where you can download the hotfixes. The e-mail message will also contain a password that you will be prompted to enter when you open the hotfix files.
For additional information about the hotfixes, access the Microsoft website at http://www.microsoft.com and follow the support link to view KB article Q302895, Q248720, Q318271, and Q307939.
Note If you are running Microsoft Windows 2000 Professional, Server, or Advanced Server with service pack 1, you must upgrade to service pack 2 and apply the required Microsoft hotfixes, or upgrade to service pack 3 (which includes all required hotfixes).
•The driver supports Microsoft Windows Server 2003. See "Using the iSCSI Driver with Microsoft Windows Server 2003" for additional information.
•The driver supports single-processor and multiprocessor machines.
•To ensure the best performance for iSCSI drivers, the extended windowing feature of TCP should be enabled on all IP hosts connecting to the SN 5400 Series system. In general, a larger window size enhances SN 5400 Series system performance.
The receive and transmit flow control feature of the Gigabit Ethernet driver should be enabled on all IP hosts connecting to the SN 5400 Series system.
SN 5400 Series System Software Requirements
The iSCSI Driver version 3.1.2 for Microsoft Windows is interoperable with a Cisco SN 5400 Series system running software release 3.2.1 or later. This version of the driver is not interoperable with a Cisco SN 5400 Series system running software release 2.5.x or earlier.
MDS 9000 Series System Software Requirements
The iSCSI Driver version 3.1.2 for Microsoft Windows is interoperable with a Cisco MDS 9000 Series system running SAN-OS Release 1.1(1) or later.
New and Changed Information
The driver now includes support for Microsoft Windows Server 2003. See the readme file for additional information about all new features.
This section describes how to obtain iSCSI driver software and upgrade an existing iSCSI driver installation, and includes the following information:
Downloading the iSCSI Driver
Registered Cisco.com users can download the most current Cisco iSCSI drivers, readme files and release notes from Cisco.com. In addition, information about driver compatibility and other relevant driver information is available on Cisco.com. You can access software and related information by following these instructions:
Step 1 At http://www.cisco.com, log in to Cisco.com. Click Technical Support and Software Center.
Step 2 At the Software Center web page, under Software Products & Downloads, click Storage Networking Software.
Step 3 At the Storage Networking Software web page, click the appropriate link for your software.
Step 4 At the Software Download web page, click the file that you want to download.Another software download web page will be displayed with detailed information about the download file and Cisco's Software License Agreement. Follow the instructions on that and any subsequent web pages to download the software.
Step 5 To install and configure an iSCSI driver, see the readme file that accompanies the iSCSI driver (in the downloaded driver archive file) and the appropriate release notes.
Installing, Upgrading and Uninstalling iSCSI Driver Software
For complete procedures to install and configure, upgrade, or uninstall iSCSI driver software, refer to the readme file that accompanies the iSCSI driver (in the downloaded driver archive file).
Using the iSCSI Driver with Cisco Network Boot
The iSCSI driver version 3.1.2 supports Cisco Network Boot, a product that allows you to initiate a boot of Microsoft Windows 2000 Server or Advanced Server on a computer without an attached disk drive.
With Cisco Network Boot, a computer without a directly attached disk drive uses iSCSI protocol via an iSCSI driver to boot from an iSCSI disk through an IP network and a Cisco SN 5400 Series system.
For more information on Cisco Network Boot, refer to the Cisco Network Boot Installation and Configuration Guide Release 2.1 and the associated release notes document. These documents are available as electronic document on Cisco.com and the Documentation CD-ROM.
Using the iSCSI Driver with Microsoft Windows Server 2003
The iSCSI driver version 3.1.2 running on Microsoft Windows Server 2003 creates a pseudo disk drive. This pseudo disk drive appears as an "unknown disk" under the Disk Management MMC application.
The "unknown disk" can be safely ignored, because it is required for the proper functioning of the iSCSI driver. It does not affect the performance or functioning of the system in any way. Do not attempt to delete this device! Deleting the device causes the Cisco iSCSI driver to stop working.
You can disable the pseudo disk device. This will alter operation of the initiator.
For more information about running the iSCSI driver on Microsoft Windows Server 2003, refer to the readme file that accompanies the iSCSI driver (in the downloaded driver archive file).
Caveats describe unexpected behavior or defects in the specified version of the driver. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious.
This document describes open and resolved severity 1 and 2 caveats, and selected caveats of other severities, for the iSCSI Driver version 3.1.2 for Microsoft Windows.
•The "Open Caveats" section lists open caveats that apply to the current version and may apply to previous versions.
•The "Resolved Caveats" section list caveats resolved in this version, but open in previous versions.
Within the sections, the caveats are sorted alphanumerically by caveat number.
Note If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity for any version. You can reach Bug Navigator II on Cisco.com at Service & Support:
There are no severity 1 or 2 caveats open against the iSCSI Driver version 3.1.2 for Microsoft Windows. For a more complete list of caveats against this release, access Cisco.com as described in the section "Cisco.com" at the end of this document.
The following messages appear in the Windows 2000 Server Event Log:Event ID: 9Source: iSCSIType: ErrorThe device, DeviceScsiiscsi1, did not respond within the timeout period.0000: 00 00 10 00 01 00 64 00 .....d.0008: 00 00 00 00 09 00 04 c0 .......À0010: 01 01 00 50 00 00 00 00 ...P....0018: 00 00 00 00 00 00 00 00 ........0020: 00 00 00 00 00 00 00 00 ........0028: 00 00 00 00 00 00 00 00 ........0030: 00 00 00 00 00 00 00 00 ........
The messages have not been associated with any other symptoms.
Cisco iSCSI driver troubleshooting information is available on the Cisco.com web site.
You can access troubleshooting information by following these instructions:
Step 1 At http://www.cisco.com, log in to Cisco.com. Click Products & Solutions, and select Storage Networking and SN 5400 Series Storage Routers from the menus.
Step 2 At the Cisco SN 5400 Series Storage Routers web page, click Technical Documentation.
Step 3 At the Technical Documentation web page, click the Tech Notes link.
Step 4 At the Tech Notes page, click the appropriate link for your iSCSI driver.
You can access iSCSI driver FAQs by following these instructions:
Step 1 At http://www.cisco.com, log in to Cisco.com. Click Products & Solutions, and select Storage Networking and SN 5400 Series Storage Routers from the menu.
Step 2 At the Cisco SN 5400 Series Storage Routers web page, click Product Literature.
Step 3 At the Product Literature web page, click the Q&A link.
Step 4 At the Q&A page, click the appropriate link for your iSCSI driver.
The following sections describe the related documentation available for the iSCSI Driver version 3.1.2 for Microsoft Windows. These documents consist of the iSCSI driver release notes and readme file.
This Release Notes document and the readme file are the only documents specific to iSCSI Driver version 3.1.2 for Microsoft Windows. It is located on Cisco.com and the Documentation CD-ROM.
The iSCSI driver readme file is available in electronic format, as part of the software download package. See the "Downloading the iSCSI Driver" section for details.
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