IBM System Storage N series SnapDrive 7.0 for Windows Administration Guide for SAN Environments SC27-5983-00 Table of Contents | 3 Contents Preface ......................................................................................................... 12 Supported features ..................................................................................................... 12 Websites .................................................................................................................... 12 Getting information, help, and service ...................................................................... 12 Before you call .......................................................................................................... 13 Using the documentation ........................................................................................... 13 Hardware service and support ................................................................................... 13 Firmware updates ...................................................................................................... 13 How to send your comments ..................................................................................... 14 SnapDrive overview ................................................................................... 15 What SnapDrive does ................................................................................................ 15 List of current SnapDrive limitations ........................................................................ 16 Recommendations for using SnapDrive .................................................................... 16 Understanding your SnapDrive components ........................................... 18 Understanding the Volume Shadow Copy Service ................................................... 19 Understanding VSS ....................................................................................... 19 SnapDrive VSS requirements ........................................................................ 20 Typical VSS backup process ......................................................................... 20 Troubleshooting the VSS Hardware Provider ............................................... 21 Establishing a connection to the storage system ...................................... 24 Managing iSCSI sessions .......................................................................................... 24 iSCSI Software Initiator node naming requirements .................................... 24 Establishing an iSCSI session to a target ...................................................... 24 Disconnecting an iSCSI target from a Windows host ................................... 26 Disconnecting a session to an iSCSI target ................................................... 27 Examining details of an iSCSI session .......................................................... 27 SnapDrive support for ESX iSCSI initiators ............................................................. 28 ESX iSCSI initiator limitations ..................................................................... 28 Enabling storage system HTTP communication with SnapDrive ............................. 29 Using SnapDrive in Microsoft environments ........................................... 30 Understanding the new features of Windows Server 2012 ....................................... 30 CSV 2.0 in Windows Server 2012 ................................................................ 30 4 | SnapDrive 7.0 for Windows Administration Guide for SAN Environments Hyper-V VSS backup changes with Windows Server 2012 ......................... 30 SnapDrive limitations on Windows Server 2012 .......................................... 31 Data ONTAP DSM support for Windows MPIO ..................................................... 31 Cluster support .......................................................................................................... 32 Support for Microsoft Cluster Shared Volumes ........................................................ 32 Verifying the cluster group owner ................................................................ 32 Changing the cluster group owner ................................................................ 33 Troubleshooting CSVs .................................................................................. 33 Creating LUNs .......................................................................................................... 34 Rules for creating LUNs ............................................................................... 34 What volume mount points are ..................................................................... 35 Creating a dedicated LUN ............................................................................. 35 Creating a shared LUN .................................................................................. 38 Windows Server 2008 and 2012 failover cluster support ............................. 42 Configuring a Windows Server 2008 and 2012 failover cluster witness disk .......................................................................................................... 42 Creating a highly available Hyper-V virtual machine using SnapDrive ....... 44 Support for creating disks on a virtual storage server operating in clustered Data ONTAP ............................................................................ 45 GPT partition support .................................................................................... 45 Configuring SnapDrive to create LUNs with Virtual Fibre Channel ............ 46 Managing LUNs ........................................................................................................ 46 How LUNs work ........................................................................................... 46 List of guidelines for connecting LUNs ........................................................ 47 Connecting to a LUN .................................................................................... 48 Making drive letter or path modifications to a LUN ..................................... 50 Guidelines for disconnecting or deleting LUNs ............................................ 51 Disconnecting a LUN .................................................................................... 52 Deleting a LUN ............................................................................................. 53 Deleting folders within volume mount points ............................................... 54 Guidelines for resizing disks ......................................................................... 54 Resizing a disk .............................................................................................. 55 Resizing a quorum disk ................................................................................. 56 Managing LUNs not created in SnapDrive ................................................... 56 Requirements for dynamically adding and removing pass-through disks on Hyper-V virtual machines .................................................................. 58 Table of Contents | 5 Managing Snapshot copies ........................................................................................ 60 Reasons for creating Snapshot copies ........................................................... 60 Restrictions on Snapshot copy creation ........................................................ 60 Creating a Snapshot copy .............................................................................. 61 Scheduling Snapshot copies .......................................................................... 62 Support for FlexClone volumes in SnapDrive .............................................. 63 Snapshot copy cautions ................................................................................. 63 Connecting to a LUN in a Snapshot copy ..................................................... 64 Data protection through archiving and restoring Snapshot backup copies ... 65 Deleting a Snapshot copy .............................................................................. 69 Managing space on storage system volumes ............................................................. 70 What SnapDrive fractional space reservation monitoring does .................... 70 Configuring space reservation monitoring .................................................... 70 Using the storage access control tool to enable thinly provisioned LUNs .... 71 What Space Reclaimer does .......................................................................... 71 Using SnapDrive in VMware environments ............................................ 76 VMware support ........................................................................................................ 76 VMware ESX server-related limitations ....................................................... 76 Enabling and disabling vCenter or ESX logon from SnapDrive MMC ........ 76 Minimum vCenter privileges required for SnapDrive operations ................. 77 Requirements for VMware vMotion support ................................................ 77 Creating LUNs in VMware environments ................................................................ 78 Creating an RDM LUN on a guest OS .......................................................... 78 Using FC RDM LUNs in a Microsoft cluster ............................................... 82 Managing LUNs in VMware environments 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