Dell Computer Drive Removing and Inserting Physical Disks, MD3000 Maintenance Considerations, 108

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2After attaching the SAS cables, wait at least three minutes for the EMM to reach optimal state.

NOTE: You may experience a transitional failure on multiple EMMs in the MEL log while the system updates.

Removing and Inserting Physical Disks

Refer to the following guidelines to ensure that physical disks are safely removed from and inserted into the MD3000/MD3000i RAID storage array.

•Wait at least 60 seconds between removing a drive and inserting a replacement.

•When pulling a drive from a storage array to move it to a different slot, wait 60 seconds before inserting the drive into the new slot.

•Wait at least 60 seconds between the removal of drives from a storage array.

•Wait at least 60 seconds between the insertion of drives into a storage array.

In a large configuration, storage management software may take up to 10 seconds to detect hardware changes.

MD3000 Maintenance Considerations

For Linux kernels, stop and then restart the SMagent after performing one of the following maintenance tasks:

•Move a controller offline or replace a controller.

•Remove SAS cables from or attach SAS cables to host servers running Red Hat® Enterprise Linux® (version 4), SUSE® Linux Enterprise Server 9, or SUSE Linux Enterprise Server 10 operating systems.

NOTE: If a Resolve Topology Conflicts message appears in the Status portlet of the Summary page after restarting the SMagent, it may be necessary to restart the host server to clear this message. Do not select the Resolve selection in the Topology Conflict wizard. The MD3000 will continue to service I/O requests, but the array could become partially managed if only in-band management is used. Stop all I/O operations on any host servers that were involved in the maintenance operation and restart the system.

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Contents Dell PowerVault Modular Disk Storage Manager User’s Guide W . d e l l . c o m s u p p o r t . d e l l . c o mFebruary Contents Connecting the Serial Cable System Setup for Password Reset Viewing iSCSI Statistics and Setting Baseline Disk Groups and Virtual Disks Premium Feature-Snapshot Virtual Disks Troubleshooting Problems 101 Contents About This Guide User InterfaceConfigure Tab Summary TabModify Tab Tools Tab ISCSI TabSupport Tab Other Information You May Need View online help View the event logAccess Virtual Disk About Your Storage ArrayOut-of-Band and In-Band Management Adding Storage Arrays Automatic Discovery of Storage ArraysManual Addition of a Storage Array Naming Storage Arrays Removing Storage ArraysSetting Up Your Storage Array Initial setup tasks includeStorage Array Setting a Password To set, change, or remove a password for a storage arrayStorage Array Support Data Resetting a Password Password GuidelinesConnecting the Serial Cable Consider these guidelines when you create a passwordSystem Setup for Password Reset Microsoft Windows Operating SystemsReset Password Configuring Alert Notifications Configuring E-mail AlertsChanging Expansion Enclosure ID Numbers Storage Array Configuring Snmp Alerts Starting or Restarting the Host-Agent Software in Windows Starting or Restarting the Host-Agent Software in LinuxStorage Array Storage Array Using iSCSI Using the iSCSI TabChanging the iSCSI Target Authentication Entering Mutual Authentication PermissionsCreating Chap Secrets Valid Ascii Characters for Chap Secrets Space Using iSCSI Changing the iSCSI Target Identification Changing the iSCSI Target DiscoveryType the alias in the iSCSI target alias field and click OK Configuring the MD3000i iSCSI Host Ports Advanced iSCSI Host Ports SettingsLowest priority default Viewing or Ending an iSCSI SessionViewing iSCSI Statistics and Setting Baseline Statistics Edit, Remove, or Rename Host Topology Host Topology Actions Desired Action Using iSCSI Service Status area, click Start Linux Event MonitorEnabling the Event Monitor Disabling the Event Monitor Configuring Host Access About Your HostAutomatic Configuration Manual Configuration using SAS HBAManual Configuration using iSCSI Click NextRemoving Host Access Host Groups Creating a Host GroupAdding a Host to a Host Group Removing a Host From a Host Group Moving a Host to a Different Host GroupHost Topology Removing a Host GroupHost Context Agent Create a virtual disk and map it to LUN Reboot the host Data Path ProtectionFailover with Red Hat Enterprise Linux About Your Host Disk Groups and Virtual Disks Creating Disk Groups and Virtual Disks Manual Configuration Disk Groups and Virtual Disks Disk Groups and Virtual Disks Automatically Configuring Hot Spares Hot Spare Drive ProtectionManually Configuring Hot Spares Click OK in the dialog boxHost-to-Virtual Disk Mapping Creating Host-to-Virtual Disk MappingsModifying and Removing Host-to-Virtual Disk Mapping Storage Partitioning Changing Controller Ownership of the Virtual DiskDisk Group and Virtual Disk Expansion Disk Group ExpansionVirtual Disk Expansion Changing Media Scan Settings Errors discovered by the media scan includeStorage Array Media Scan Microsoft Services Virtual Disk ServiceSuspending the Media Scan Volume Shadow-Copy Service Disk Groups and Virtual Disks Premium Feature-Snapshot Virtual Disks Creating a Snapshot Virtual Disk Using the Simple Path About the Simple PathHost-to-Virtual Disk Mapping The default setting is Map now SMrepassist -ffilename-identifier Creating the Snapshot Using the Simple Path Snapshot Virtual Disks Creating a Snapshot Virtual Disk Using the Advanced Path About the Advanced PathSnapshot Virtual Disks SMrepassist -ffilename-identifier Creating the Snapshot Using the Advanced Path Snapshot Virtual Disks Specifying Snapshot Virtual Disk Names Source-virtual disk-name-sequence-numberSnapshot Repository Capacity Re-creating Snapshot Virtual Disks Disabling a Snapshot Virtual DiskTo disable a snapshot virtual disk Preparing Host Servers to Re-create a Snapshot Virtual DiskRe-creating a Snapshot Virtual Disk Premium Feature-Virtual Disk Copy Creating a Virtual Disk Copy for an Mscs Shared Disk Reasons to use virtual disk copy include the followingIf you are using the target virtual disk for backup purposes Virtual Disk Read/Write PermissionsVirtual Disk Copy Restrictions Creating a Virtual Disk Copy Preparing Host Servers to Create a Virtual Disk CopyCopying the Virtual Disk Choose the target virtual diskClick Next at the bottom Setting Copy Priority Storage Array Performance During Virtual Disk CopyStopping a Virtual Disk Copy Recopying a Virtual DiskTo stop a virtual disk copy, complete the following steps Click Yes to stop the virtual disk copyPreparing Host Servers to Recopy a Virtual Disk Recopying the Virtual Disk Removing Copy Pairs Virtual Disk Copy Firmware Downloads Downloading RAID Controller and Nvsram PackagesDownloading Both RAID Controller and Nvsram Firmware Downloading Only Nvsram Firmware Downloading Non-redundant Mscs Nvsram FirmwareDownloading Physical Disk Firmware Downloading EMM Firmware 100 Troubleshooting Problems Recovery GuruStorage Array Profile Device Health ConditionsSMrepassist Utility 102Support Information Package Click Browse103 Recovering from an Unidentified Storage Array Unidentified DevicesPing host-name-or-IP-address-of-the-host 105Troubleshooting Removing an EMM from the Expansion Enclosure Inserting an EMM into an Expansion Enclosure107 MD3000 Maintenance Considerations Removing and Inserting Physical Disks108 109 110 Index 111Index 113 114

Computer Drive specifications

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