HP StorageWorks MSA1500 HP StorageWorks 1000/1500 Modular Smart Array applicat - Page 27

4 Migrating multi-path cluster systems This chapter provides procedural steps to migrate existing multi-path cluster MSA1000 and MSA1500 disk arrays in Windows environments from active/passive to active/active processing. IMPORTANT: Before proceeding, you must understand the following limitations associated with the upgrade: • If HP MPIO Manager for MSA Arrays is installed, it can not be accessed through HP Insight Manager. • If HP StorageWorks Secure Path for Windows is installed, it cannot access or manage HP StorageWorks active/active MSA1000 and MSA1500 disk arrays. • MSA1000 environments must have 256MB or greater cache modules installed; 128MB cache modules are not supported in MSA1000 active/active environments. • It is not possible to migrate back to active/passive firmware. Re-loading the older firmware will result in the loss of all configuration information on the MSA. CAUTION: A full backup of the Windows system OS and data volumes is required before starting the upgrade process. HP is not responsible for any data loss incurred during the upgrade process. Pre-migration checklist Step Description Check 1 Review or obtain the following documents from the Technical Documents page of the F appropriate MSA website: • HP MPIO Full-Featured DSM for Windows for MSA Disk Arrays release notes • HP MPIO DSM Manager release notes • HP StorageWorks Modular Smart Array 1000/1500 Support Software CD release notes • Supported SAN Topologies for HP MPIO Full-Featured DSM with the MSA product line • MSA compatibility guide and QuickSpecs • MSA1000/1500 firmware updating guide • MSA1000/1500 active/active controllers best practices guide 2 Obtain the latest HP StorageWorks Modular Smart Array 1000/1500 Support F Software CD from the Software, firmware & drivers page of the appropriate MSA website. 3 Obtain the latest MSA active/active firmware files from the Software, firmware & drivers page of appropriate MSA website. 4 Back up the OS and data volumes on all of the server nodes. F 5 Verify the successful backup of OS and data volumes on all server nodes. F 6 Verify that the OS is up to the latest service pack version: F • For a Windows 2000 server system - Service Pack 4 or later • For a Windows 2003 server system - Service Pack 1 or later Migrating to active/active controllers in Windows environments 27