Q.
A. Creating a snapshot
When creating a snapshot, there are several options you can specify:
Name: This is used to identify the snapshot.
Description: This is used to describe the snapshot.
Memory: If the <memory> flag is 1 or true, a dump of the internal state of the virtual machine is included in the snapshot. Memory snapshots take longer to create.
Quiesce: If the <quiesce> flag is 1 or true, and the virtual machine is powered on when the snapshot is taken, VMware Tools is used to quiesce the file system in the virtual machine. Quiescing a file system is a process of bringing the on-disk data of a physical or virtual computer into a state suitable for backups. This process might include such operations as flushing dirty buffers from the operating system's in-memory cache to disk, or other higher-level application-specific tasks.
Note: Quiescing indicates pausing or altering the state of running processes on a computer, particularly those that might modify information stored on disk during a backup, to guarantee a consistent and usable backup.
When a snapshot is created, it is comprised of these files:
<vm>-<number>.vmdk and <vm>-<number>-delta.vmdk
A collection of .vmdk and -delta.vmdk files for each virtual disk is connected to the virtual machine at the time of the snapshot. These files can be referred to as child disks, redo logs, or delta links. These child disks can later be considered parent disks for future child disks. From the original parent disk, each child constitutes a redo log pointing back from the present state of the virtual disk, one step at a time, to the original.
Note: The <number> value may not be consistent across all child disks from the same snapshot. The file names are chosen based on filename availability.
<vm>.vmsd
The .vmsd file is a database of the virtual machine's snapshot information and the primary source of information for the snapshot manager. The file contains line entries which define the relationships between snapshots as well as the child disks for each snapshot.
<vm>Snapshot<number>.vmsn
These files are the memory state at the time of the snapshot.
Note: The above files will be placed in the working directory by default in ESX/ESX 3.x and 4.x. This behavior can be changed if desired. For more information on creating snapshots in another directory, see Creating snapshots in a different location than default virtual machine directory (1002929). In ESXi 5.x and later snapshots descriptor and delta VMDK files will be stored in the same location as the virtual disks (which can be in a different directory to the working directory). To change this behavior, see Changing the location of snapshot delta files for virtual machines in ESXi 5.0 (2007563)
What products use the snapshot feature?
In addition to being able to use snapshot manager to create snapshots, snapshots are used by many VMware and third-party products and features. Some VMware products that use snapshots extensively are:
VMware Data Recovery
VMware Lab Manager
How do snapshots work?
Our VMware API allows VMware and third-party products to perform operations with virtual machines and their snapshots. This is a list of common operations that can be performed on virtual machines and snapshots using our API:
CreateSnapshot: Creates a new snapshot of a virtual machine. As a side effect, this updates the current snapshot.
RemoveSnapshot: Removes a snapshot and deletes any associated storage.
RemoveAllSnapshots: Remove all snapshots associated with a virtual machine. If a virtual machine does not have any snapshots, then this operation simply returns successfully.
RevertToSnapshot: Changes the execution state of a virtual machine to the state of this snapshot.
(vSphere 5.0 only) Consolidate: Merges the hierarchy of redo logs.
VMware vCenter and the VMware Infrastructure Client (Snapshot Manager, Storage vMotion)
When creating a snapshot, there are several options you can specify:
Name: This is used to identify the snapshot.
Description: This is used to describe the snapshot.
Memory: If the <memory> flag is 1 or true, a dump of the internal state of the virtual machine is included in the snapshot. Memory snapshots take longer to create.
Quiesce: If the <quiesce> flag is 1 or true, and the virtual machine is powered on when the snapshot is taken, VMware Tools is used to quiesce the file system in the virtual machine. Quiescing a file system is a process of bringing the on-disk data of a physical or virtual computer into a state suitable for backups. This process might include such operations as flushing dirty buffers from the operating system's in-memory cache to disk, or other higher-level application-specific tasks.
Note: Quiescing indicates pausing or altering the state of running processes on a computer, particularly those that might modify information stored on disk during a backup, to guarantee a consistent and usable backup.
When a snapshot is created, it is comprised of these files:
<vm>-<number>.vmdk and <vm>-<number>-delta.vmdk
A collection of .vmdk and -delta.vmdk files for each virtual disk is connected to the virtual machine at the time of the snapshot. These files can be referred to as child disks, redo logs, or delta links. These child disks can later be considered parent disks for future child disks. From the original parent disk, each child constitutes a redo log pointing back from the present state of the virtual disk, one step at a time, to the original.
Note: The <number> value may not be consistent across all child disks from the same snapshot. The file names are chosen based on filename availability.
<vm>.vmsd
The .vmsd file is a database of the virtual machine's snapshot information and the primary source of information for the snapshot manager. The file contains line entries which define the relationships between snapshots as well as the child disks for each snapshot.
<vm>Snapshot<number>.vmsn
These files are the memory state at the time of the snapshot.
Note: The above files will be placed in the working directory by default in ESX/ESX 3.x and 4.x. This behavior can be changed if desired. For more information on creating snapshots in another directory, see Creating snapshots in a different location than default virtual machine directory (1002929). In ESXi 5.x and later snapshots descriptor and delta VMDK files will be stored in the same location as the virtual disks (which can be in a different directory to the working directory). To change this behavior, see Changing the location of snapshot delta files for virtual machines in ESXi 5.0 (2007563)
What products use the snapshot feature?
In addition to being able to use snapshot manager to create snapshots, snapshots are used by many VMware and third-party products and features. Some VMware products that use snapshots extensively are:
VMware Data Recovery
VMware Lab Manager
How do snapshots work?
Our VMware API allows VMware and third-party products to perform operations with virtual machines and their snapshots. This is a list of common operations that can be performed on virtual machines and snapshots using our API:
CreateSnapshot: Creates a new snapshot of a virtual machine. As a side effect, this updates the current snapshot.
RemoveSnapshot: Removes a snapshot and deletes any associated storage.
RemoveAllSnapshots: Remove all snapshots associated with a virtual machine. If a virtual machine does not have any snapshots, then this operation simply returns successfully.
RevertToSnapshot: Changes the execution state of a virtual machine to the state of this snapshot.
(vSphere 5.0 only) Consolidate: Merges the hierarchy of redo logs.
VMware vCenter and the VMware Infrastructure Client (Snapshot Manager, Storage vMotion)
How to do Mac data recovery?
Q. In my mac book I in installed VMware to run Windows XP. Yesterday I accidentally removed some files from document folder in mac. Now I'm not able to run XP using VMware. How can I resolve this problem? If I reinstall VMware, can I still access my XP from Mac?? Please help
A. Data Recovery Mac - Macintosh Data Recovery is the best software program for recovery from Mac PC.
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Looking for customer reviews for Acronis True Image Home 2010?
Q. Where can I find reviews and opinions online for Acronis True Image Home 2010
A. Acronis has launched Acronis True Image Home 2010, the latest version of its consumer backup and recovery software. Taking a full backup image with Acronis True Image Home 2010 prior to moving to Windows 7 provides the ability to quickly and easily recover the entire PC, including the operating system, applications, updates and files, if a roll back is necessary.The new Acronis Nonstop Backup feature offers users total system and data protection through automatic, incremental backups, allowing complete roll back to any point in time. According to Acronis, users can have complete confidence that their entire computer â photos, music, email, and family data as well as operating system, applications, and settings â are protected around the clock. Acronis True Image Home 2010 is available for download at http://www.acronis.co.uk and is also available through major retailers. Recommended retail price is £39.95.
Acronis Press Release
NEW ACRONIS TRUE IMAGE HOME 2010 OFFERS ONLINE BACKUP AND CONTINUOUS DATA PROTECTION
Solution provides insurance for Windows 7 migration
Acronis is today launching Acronis True Image Home 2010, the latest version of its consumer backup and recovery software. Featuring its patented disk imaging technology, it now protects home computers with round the clock full-system protection, compatibility with Windows 7, and an online backup option.
Acronis True Image Home 2010 is an essential safety net for users before they migrate to Microsoft Windows 7 operating system. Taking a full backup image with Acronis True Image Home 2010 prior to moving to Windows 7 provides the ability to quickly and easily recover the entire PC, including the operating system, applications, updates and files, if a roll back is necessary. In addition, it allows users to easily retrieve data by accessing the Acronis image via Microsoft Windows Explorer. Users can also create a virtual machine from the backup image and run the original Windows operating environment within Windows 7 using software from Microsoft, VMware Inc., or Parallels.
The new Acronis Nonstop Backup feature offers users total system and data protection through automatic, incremental backups, allowing complete roll back to any point in time. Users can have complete confidence that their entire computer â photos, music, email, and family data as well as operating system, applications, and settings â are protected around the clock. Acronis True Image Home 2010 combines award-winning disk imaging and bare metal restore technology to allow a user to quickly recover from a virus outbreak, unstable software downloads, or failed hard drives.
By enhancing Acronis True Image Home 2010 with the option of backing up files and folders over the Internet to a secure location, Acronis protects users with a single application to manage all backup and recovery tasks, from creating full images of hard drives to saving specific files and folders online. It is a complementary, automatic, simple, and safe way to back up all important files. The data is secure, saved to a remote location for safekeeping and retrieval.
âPeople are increasingly storing files, photos, music and valuable personal information including legal and financial data on their home PCs and laptops, which require adequate protection,â says Laurent Dedenis, Executive Vice President EMEA at Acronis. âWith Acronis True Image Home 2010 in place, users can have assurance that their computer is fully protected. Between disk imaging, file backup, local or online backup, and non-stop backup protection, Acronis True Image Home 2010 sets the standard for consumer PC disaster recovery in an affordable and easy-to-use solution.
Acronis Press Release
NEW ACRONIS TRUE IMAGE HOME 2010 OFFERS ONLINE BACKUP AND CONTINUOUS DATA PROTECTION
Solution provides insurance for Windows 7 migration
Acronis is today launching Acronis True Image Home 2010, the latest version of its consumer backup and recovery software. Featuring its patented disk imaging technology, it now protects home computers with round the clock full-system protection, compatibility with Windows 7, and an online backup option.
Acronis True Image Home 2010 is an essential safety net for users before they migrate to Microsoft Windows 7 operating system. Taking a full backup image with Acronis True Image Home 2010 prior to moving to Windows 7 provides the ability to quickly and easily recover the entire PC, including the operating system, applications, updates and files, if a roll back is necessary. In addition, it allows users to easily retrieve data by accessing the Acronis image via Microsoft Windows Explorer. Users can also create a virtual machine from the backup image and run the original Windows operating environment within Windows 7 using software from Microsoft, VMware Inc., or Parallels.
The new Acronis Nonstop Backup feature offers users total system and data protection through automatic, incremental backups, allowing complete roll back to any point in time. Users can have complete confidence that their entire computer â photos, music, email, and family data as well as operating system, applications, and settings â are protected around the clock. Acronis True Image Home 2010 combines award-winning disk imaging and bare metal restore technology to allow a user to quickly recover from a virus outbreak, unstable software downloads, or failed hard drives.
By enhancing Acronis True Image Home 2010 with the option of backing up files and folders over the Internet to a secure location, Acronis protects users with a single application to manage all backup and recovery tasks, from creating full images of hard drives to saving specific files and folders online. It is a complementary, automatic, simple, and safe way to back up all important files. The data is secure, saved to a remote location for safekeeping and retrieval.
âPeople are increasingly storing files, photos, music and valuable personal information including legal and financial data on their home PCs and laptops, which require adequate protection,â says Laurent Dedenis, Executive Vice President EMEA at Acronis. âWith Acronis True Image Home 2010 in place, users can have assurance that their computer is fully protected. Between disk imaging, file backup, local or online backup, and non-stop backup protection, Acronis True Image Home 2010 sets the standard for consumer PC disaster recovery in an affordable and easy-to-use solution.
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