backup chain

In the Ultra Transcenders books

VBR-13

Each book explains backup chain in context, with comparison tables and the common traps.

Terms in this definition

• Set

  Secret permission in Key Vault for writing secrets; some older material refers to it as Create.

• Job

  A sequence of steps executed together on one agent or runner, or on the server for agentless work. While running, each occupies one of your parallel jobs.

• OVER

  Gives a T-SQL window function its window: PARTITION BY, ORDER BY and, if wanted, a ROWS or RANGE frame. Rankings and running totals can then be worked out while every row is kept.

• Metadata

  Describes data rather than being the data itself, for instance how a file is laid out or what rows each chunk contains, so tools can read things efficiently.

• backup method

  Three schemes exist: forward incremental, forever forward incremental and reverse incremental. The one chosen fixes which files make up a chain and their sequence, and so how heavily and in what way the repository is read and written.

Related terms

• Copy Backup

  Copying an entire backup chain once to another repository or a local folder; the result then appears under an (Exported) node. A backup copy job handles scheduled copies, and backup export turns a single restore point into one VBK.

• per-machine backup files

  A repository setting that gives every workload in a job its own backup chain, now in the form of per-machine files with separate metadata. Switching the setting leaves chains that already exist in their old format.

• VBK file

  The Veeam file type for a full backup, holding an entire workload image and forming the first link of a backup chain.

• VSB

  A small, temporary file containing only pointers to blocks in a disk backup chain, with no backup data of its own. Tape jobs use it to build a synthetic virtual full on tape.