VMware guests and ISCSI/SAN storage. Last week I have had a problem with my Windows Server VMs residing on an i. SCSI storage. Error eventid 1. The driver detected a controller error on \Device\Harddisk. The device, \Device\Scsi\symmpi. VMWARE virtual machines running Windows. D: 0x. 0/H: 0x. 1 0x. Aug 2. 7 1. 5: 5. WARNING: FS3: 4. 86. Reservation error: No connection. Aug 2. 7 1. 5: 5. SCSI: bus 0 target 1 trying to establish session 0x. Aug 2. 7 1. 5: 5. SCSI: bus 0 target 1 established session 0x. Aug 2. 7 1. 5: 5. Initialize the reset lun framework for session 0x. Aug 2. 7 1. 5: 5. SCSI: session 0x. Aug 2. 7 1. 5: 5. SCSI: session 0x. These errors simply meant that we had temporarily suffered a network failure on the i. SCSI link. And our virtual machines had lost connectivity to their vmdk or raw disk mappings. Once everything went back to normal, I got this message: Aug 2. LVM: 4. 52. 3: . The time that Microsoft Windows will accept to wait for a hard disk to respond before a BSOD is defined by the Time. Out. Value registry setting under: HKEY. ![]() Another Powershell solution can be found here. A related post is here. Finally, a good i. SCSI SAN configuration guide for VMWARE can be found here. Hey there Francis Lobo. Since when are cross-platform application development tools used by beginners???? Since when are Ajax development or visual diff merge tools.Advanced Restore - Virtual Server Agent for VMware. Table of Contents. To restore files and folders, you must be able to access metadata about files and folders during the browse and restore operation. This can be accomplished in two ways: If the Enable Granular Recovery option is selected when performing the backup of the virtual machine, metadata about files and folders is collected during the backup process. Collecting metadata adds to the time required for the backup. ![]() On this page I will be constantly adding Netapp Clustered Ontap CLI commands as an easy reference Pocket Guide. To block these annoying links, just install Freedom ($29/year or $119 forever), open your dashboard, select “Add a blocklist,” and enter these domains. The granular recovery option supports NTFS, ext. Windows file restores or (for streaming backups only) Linux file restores that do not use the File Recovery Enabler for Linux. When file and folder metadata is collected during a backup, that information is used for browse and file recovery operations, and you cannot perform a Live Browse. If metadata was not collected during a backup, file and folder information can be discovered during a Live Browse operation. Collecting metadata during the browse operation adds to the time required for the browse and restore. Media. Agents include 3. DFS components to enable Live Recovery and Live Mount operations for virtual machines running on Microsoft Windows. You can use the same Media. Agent that was used to perform a backup to restore full virtual machines or guest files and folders, without requiring granular recovery during backups. The File Recovery Enabler for Linux provides UNIX file system support for ext. XFS, JFS, Btrfs, and NTFS. To enable extended file system recovery for UNIX- based virtual machines, deploy a File Recovery Enabler for Linux or convert a Linux Media. Agent to a File Recovery Enabler. Notes: If granular recovery is enabled but some file information could not be read (for example, ext. Linux VM), partial metadata is collected during the backup, and you can only browse files and folders for which metadata was successfully captured. To enable Live File Recovery to be used in such situations, you can add the b. Allow. Partial. VMMetadata additional setting to the Virtual Server Agent proxy and set the value to false. With that setting, partial metadata for a virtual machine is discarded, enabling Live File Recovery to be used for browse and restore operations. For steps, see Add or Modify an Additional Setting. Logical volume manager (LVM) metadata processing for volumes encrypted using Bit. Locker is currently not supported. Decrypting contents of such volumes may not be feasible during backup because decryption requires a recovery password or a decryption key. Because metadata collection for the volume fails, a file- level browse operation for the encrypted volume cannot display file information. After you enable CBT restores, CBT is used automatically for restoring a full virtual machine when the Restore in place and Unconditionally overwrite VM with the same name restore options are used, providing significant performance improvements. Since only changed blocks are restored, a CBT restore is much faster and more efficient than a classic restore. If a CBT restore cannot be performed or if the restore job is restarted, the restore reverts to a classic restore. CBT restores are not supported for attaching a disk to an existing virtual machine. Only the first restore from a backup can use CBT. To perform another CBT restore, another backup must be performed first. If you perform an incremental backup after performing a CBT restore, the incremental backup uses the changed block tracking IDs from the last backup that ran before the restore; the query of changed sectors fails and the CBT status is set to Failed in the Comm. Cell Console. You can ignore the CBT status; new changed block tracking IDs are generated and can be used for the next incremental backup job or for CBT restores. When performing a restore of a full virtual machine or attaching VM disks to an existing virtual machine, you can change the disk provisioning on the Restore Options for All Selected Items dialog. The following disk provisioning types are available: Original: (default) Use the same disk provisioning that the source virtual machine used at the time of backup. Thick Lazy Zero: Use thick lazy zero provisioning to allocate disk space for all disks. This method only writes to sectors of the disk that contain data. When this option is used to restore a thick eager zero disk, empty extents are written. In the v. Sphere client, the resulting restored disk will still be displayed as a thick eager zero disk. Thick Eager Zero: Use thick eager zero provisioning to allocate disk space for all disks. This method writes zeros to any unused sectors of the disk. If the original source disk was provisioned as thin or thick eager zero, a restore that specifies thick eager zero provisioning can skip any empty sectors of the disk, because the empty sectors are already written with zeros. In this case, restore logs may indicate that the disk provisioning method was thick lazy zero. When restoring from a thick lazy zero disk using thick eager zero provisioning, zeros are written to all empty sectors.: Use thin provisioning to allocate disk space for all disks in the virtual machine. When you restore a virtual machine that has thin disks on a NFS datastore, empty blocks on the disk are not restored; only the actual data on the disk is restored. If Change Block Tracking was not functioning properly at the time of backup, disk data is still restored and empty blocks are not restored. As a result, disks are restored with the correct data size and the restore operation takes considerably less time. The following transport modes can be selected on the Restore Options for All Selected Items dialog: Auto: (default) The most suitable transport is selected automatically based on the setup. SAN: For directly connected storage using Fibre Channel (FC) or Internet SCSI (i. SCSI) protocols; only available if the proxy is on a physical machine. Hot. Add: Used when the Virtual Server Agent is installed on a virtual machine on an ESX server. NBD: Data is transmitted over a TCP/IP connection between the ESX server and proxy. NBD SSL: Uses the TCP/IP connection with encrypted data transfer. In most scenarios, restores using SAN and Hot. Add transport are faster than NBD or NBD SSL operations; but SAN restores using thin disk provisioning can be slower than LAN restores. Performance can be improved by using NBD for thin disk provisioning, or by setting the transport mode to SAN and specifying thick eager zero disk provisioning. Using standard Commvault components and configurations with the Virtual Server Agent (VSA), you can restore full VMs, VMDK files, and guest files and folders, or attach a restored virtual machine disk to an existing VM. Depending on your requirements for restoring VM data, you can deploy different components and use different configurations or backup strategies. The following table provides an overview of additional use cases for restoring VM data, including any required components, configuration options, or backup requirements. Unless otherwise noted, these features are available for restores of data for VMs running any guest operating system supported by VMware (for example, Windows and Linux VMs). Live Features. Use case. Required Components. Configuration. Backup. More Information. Live VM Recovery – Recover and power on a VM directly from backup without waiting for a complete restore. Media. Agent (includes 3dfs support)ESX server to mount NFS datastore for browse and restore Standard (client, proxies, and subclient)Streaming backups, Intelli. Snap backup copies, or Intelli. Snap backups using Net. App snapshot engines. Using Live Recovery for Virtual Machines. Live Mount – Run a temporary VM directly from stored backup. Operations Manager Media. Agent (includes 3dfs support)Refresh Datacenters. Live Mount provisioning policy. Streaming backups or Intelli. Snap backup copies. Live Mount. Live Browse or Live File Recovery – Browse and restore files without requiring metadata collection during backup (granular recovery option). ESX server to mount NFS datastore for browse and restore. VSA installed on Media. Agent For Windows VMs, NTFS file system. File Recovery Enabler for Linux required for expanded UNIX file system support: ext. XFS, JFS, or Btrfs file systems. Proxy ESX Server. Default File Recovery Enabler for instance (if deployed)Backups residing on magnetic disk libraries. Only used when there is no metadata available for a backup job (fails if partial metadata was collected for any VMs in a subclient)Live File Recovery. Additional File Recovery Options. The following options can be used with granular recovery or Live File Recovery. Use case. Required Components. Configuration. Backup. More Information. Guest agent restores of files and folders– Supports recovery of larger amounts of data and provides best performance. File system agent installed on destination client (in full or restore- only mode)Standard (client, proxies, and subclient)Any backup type. Guest Agent Restores. Agentless restores – Restore small files and folders into a virtual machine. VMware tools or open- vm- tools on destination VMStandard (client, proxies, and subclient)Any backup type. Agentless Restores. You can initiate a restore in the following ways: From a backup set: Right- click the backupset and select All Tasks . For more information, see Restore by Jobs. When restoring VMware data, you can select one of the following restore types. Full Virtual Machine. This restore type is selected by default. This restore type is useful in the following scenarios: You are unable to turn on the virtual machine, but the disks (VMDK files) are available for the machine. You want to restore an entire virtual machine to a specific point in time. You want to move the virtual machine to a new host. If at least one Hyper- V node is configured on the Comm. Serve host, a Restore as option is displayed. The default selection is VMware; but you can use this option to convert a VMware virtual machine to Microsoft Hyper- V.
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