User manual HP STORAGEWORKS 500 G2 MODULAR SMART ARRAY

[. . . ] HP Smart Array Multipath Software User Guide December 2005 (Fourth Edition) Part Number 354907-004 © Copyright 2005 Hewlett-Packard Development Company, L. P. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. [. . . ] At this security level, browsing to HP Management agents generates many security messages. Installation and operation in Microsoft environments 11 To avoid these security messages: 1. Manually set the servers to the Local intranet zone by entering: http://<servername or IP address>:2301 https://<servername or IP address>:2381 Static LUN balancing The Smart Array Multipath software and Microsoft operating system support static LUN balancing. The movement of drives to specific paths can be done two ways: · · Locally with a DME Remotely with the Smart Array Multipath found on the Smart Array Multipath Software CD From the desktop, right-click My Computer. When the Properties window opens, click the Redundancy Configuration tab. From the Redundancy Configuration tab, the administrator can view the following controller information: · · · · · To balance LUNs with the DME: 1. 5. Name Slot number Status Slot number of redundant controller Controller tree 6. In the controller tree, right-click one of the logical volumes and then click Switch Path. Install the ProLiant Storage Manager software and Smart Array Multipath Manager software ("Multipath installation for Microsoft" on page 11). Browse to the System Management Homepage by entering: https:\\<name of server>:2381 To manage your redundant configuration: 1. 2. IMPORTANT: If you encounter numerous security messages on a Microsoft® Windows® Server 2003 platform, review the Microsoft browser security settings (on page 11). 3. The system may prompt for the administrator password established during the original software installation. The Multipath Management and Configuration screen displays. Installation and operation in Microsoft environments 12 8. From the Multipath Management and Configuration screen, do one of the following: · · To move all drives from the current path to the redundant path, click the link for the controller and select Switch All Paths. To move a drive from one path to the redundant path, click the link for the drive and select Switch Path. IMPORTANT: After establishing a redundant configuration and adding a logical volume, use Windows® Disk Manager to detect the new volume. Installation and operation in Microsoft environments 13 Installation and operation in Red Hat Enterprise Linux 2. 1 environments In this section Pre-installation configuration for Red Hat Enterprise Linux 2. 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Multipath installation for Red Hat Enterprise Linux 2. 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Static load (read-only) balancing in Red Hat Enterprise Linux 2. 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Pre-installation configuration for Red Hat Enterprise Linux 2. 1 Before installing Smart Array Multipath software on a server with a Linux Red Hat operating system: · · Create a new Linux kernel that recognizes the multipath hardware configuration. Modify the raidtab configuration file to be sure it contains the appropriate information. Editing the active kernel To configure the system for multipath operations, HP recommends the following steps: 1. Insert the new kernel into the GRUB or LILO boot-loader. The procedures in this section provide examples for all these basic steps. Alternatively, you can install the modules without rebuilding the kernel. IMPORTANT: Modules not installed in a kernel are not loaded at boot time, requiring you to remake modules after every power cycle or reboot. HP recommends that you install the modules into the kernel using the steps in this section. Modifying the Makefile IMPORTANT: The following procedure is for Linux Red Hat only. To modify the Makefile: 1. Identify the name of the active kernel: a. At the root level of the kernel source tree (usually /usr/src/linux-xxx), enter: uname -a b. [. . . ] 27 HBA failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Cable failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Problem diagnosis When a problem exists with the multipath I/O, consult the Insight Management Agents and do one of the following: · For Microsoft® operating systems: · · Use the ProLiant Storage Manager or ProLiant Multipath Manager FAQs. Use the ProLiant Storage Manager with ProLiant Multipath Manager software and the DME to identify I/O path status. · For Linux operating systems, use the following command to identify HBA status, multipath status, and I/O block transfer size: cat /proc/mdstatus Problems during installation This section provides systematic instructions on what to try and where to go for help for the most common problems encountered during software installation. [. . . ]