IBM System Storage SAN Volume Controller ++++++++++++++++++++++++++++++++++++++++ ------------------------------------------------------------------------------- CONTENTS 1. Introduction 2. Available Education 3. Pre-Requisites 4. System Upgrade Information 5. Software Levels 6. Problems Resolved and New Features 7. Further Documentation 8. Known Issues and Restrictions in this Level 9. Maximum Configurations 10. Supported Hardware ------------------------------------------------------------------------------- 1. Introduction This document describes how to install version 7.2.0.0 of the IBM System Storage SAN Volume Controller This release delivers fixes to resolve the APARs detailed in section 6. Please refer to the Recommended Software List and Supported Hardware List on the support website: http://www.ibm.com/storage/support/2145 ------------------------------------------------------------------------------- 2. Available Education A course on SAN Volume Controller Planning and Implementation is available. For further information or enrolment, contact your local IBM representative. Visit the support website for online learning materials and tutorials, IBM Redbooks and training information. ------------------------------------------------------------------------------- 3. Pre-Requisites Before installing this software level please check the following pre-requisites are met. Also please note the concurrent upgrade (upgrade with I/O running) restrictions. Performance of the system will be degraded during the software upgrade process while nodes are taken offline to perform the upgrade and the write cache is flushed when each node is restarted. IBM recommends you perform the upgrade at a time of lower overall I/O activity and when you do not expect significant spikes in the system workload. If you are performing a concurrent software upgrade, you must first ensure that all host paths are available and operating correctly. Check there are no unfixed errors in the event log or in the service GUI. Use normal service procedures to resolve any errors before proceeding. Before upgrading, IBM recommends using the software upgrade test utility "upgradetest". Refer to the following URL for further information: http://www.ibm.com/support/docview.wss?uid=ssg1S4000585 If you are running a version of SVC software older than 6.4.0.0 then you will have to perform multiple upgrades to install the 7.2.0 software on your system. Please see the following web page for the full upgrade compatibility matrix. http://www-01.ibm.com/support/docview.wss?uid=ssg1S1001707 Note: Once an upgrade has completed, it is not possible to downgrade the software to an earlier level without deleting and manually rebuilding the system in its entirety, including restoring all volume data from an external backup. ------------------------------------------------------------------------------- 4. System Upgrade Information IMPORTANT: Systems with the 10 Gb/s Ethernet adapter will take longer to upgrade each node when installing 7.2.0 for the first time. This is due to an upgrade of the firmware on this adapter, and each node may take around 40 minutes to complete the upgrade. This additional delay will not affect systems upgrading from V7.2.0.x to a later release of 7.2.0. Global Mirror Relationships Must Be Stopped When Upgrading to V7.2.0 http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004472 ------------------------------------------------------------------------------- 5. Software Levels 2145 Software: 2145 Release Level 7.2.0.0 (87.0.1311291000) ------------------------------------------------------------------------------- 6. Problems Resolved and New Features New features in 7.2.0 * Enhanced stretch cluster * Configurable port masking * Global Mirror performance improvements * Support for remote copy replication using native IP links * Discontinued support for 2145-8F2 and 2145-8F4 node hardware types This release contains all fixes included in the 7.1.0.6 release. APARs resolved in this release (7.2.0.0): Critical Fixes HU00014 Loss of access to data in systems with a large number of volumes mapped to hosts HU00126 Multiple node asserts when all nodes containing FC metadata are offline, but volumes are online IC88865 Node asserts caused by handling excessive number of faults from backend storage IC90476 Node asserts if the ldap server with id 0 is not configured IC91332 No configuration node after upgrading with GMCV active IC92665 Node assert when an iSCSI initiator has the same IQN as the iSCSI target IC92867 Node asserts caused by moving the only compressed volume in an IO group to a different IO group High Importance Fixes HU00027 iSCSI performance instability for large transfers HU00167 Node assert due to decompression issue IC87264 Node assert caused by timing window shortly after starting an incremental FlashCopy IC89608 Node assert caused by XCOPY command to a recently offline volume IC91336 Unable to detect Storwize LUNs when connecting backend storage using FCoE IC94392 System was returning different messages for invalid username and invalid password IC95107 Node assert when large numbers of space efficient volumes come online at the same time on a single node Suggested Fixes HU00069 IERR log file incorrectly generated on power loss HU00108 GUI incorrectly warns that certain ldap username strings are invalid HU00110 GUI issues command without details in progress dialog HU00112 GUI fails to complete operations, with no way to close the task dialog box HU00127 Incorrect progress information for Global Mirror with Change Volumes HU00169 Too many error log dumps stored on a node IC85623 Blank front panel display after power failure IC94781 Health status pod not auto-updating when issues are resolved ------------------------------------------------------------------------------- 7. Further Documentation The latest version of all SAN Volume Controller documentation can be downloaded from the support website: http://www.ibm.com/storage/support/2145 ------------------------------------------------------------------------------- 8. Known Issues and Restrictions in this Level It is not supported to shrink the size of a compressed volume in 7.2.0.0 If using IP replication, please review the set of restrictions published in the V7.2 Configuration Limits and Restrictions document. Moving Volumes to Another I/O Group Without Stopping Host Activity is Not Supported for All Operating Systems http://www.ibm.com/support/docview.wss?uid=ssg1S1004125 Intra-Cluster Global Mirror Not Supported Refer to the following flash for more information on this restriction: http://www.ibm.com/support/docview.wss?uid=ssg1S1003725 SAN Volume Controller or Storwize Family Inter-cluster Metro Mirror and Global Mirror Compatibility Cross Reference http://www.ibm.com/support/docview.wss?uid=ssg1S1003646 Use of a standards-compliant browser, such as Firefox, is recommended for using the SVC Management GUI. Use of Internet Explorer is supported but may result in slower performance of the GUI. If an upgrade stalls or fails then Contact IBM Support for Further Assistance http://www.ibm.com/support/docview.wss?uid=ssg1S1002894 ------------------------------------------------------------------------------- 9. Maximum Configurations The maximum configurations for 7.2.0 are documented in the 7.2 Configuration Limits and Restrictions document which is available from: http://www-01.ibm.com/support/docview.wss?rs=591&uid=ssg1S1004510 ------------------------------------------------------------------------------- 10. Supported Hardware This release of SAN Volume Controller software is supported on the following node hardware types: * 2145-CG8 * 2145-CF8 * 2145-8G4 * 2145-8A4 -------------------------------------------------------------------------------