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[DOCS] Add note about restoring snapshot versions (#55225)

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As discussed at https://elastic.slack.com/archives/C0D1XEXEZ/p1586939752242300 is it not possible to restore snapshots taken on newer versions into clusters running lower versions. For example, a snapshot created in a 7.6.0 cluster cannot be restored on a 7.5.0 cluster. This needs to be documented.
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Toby Sutor 2020-05-27 17:38:48 +02:00 committed by James Rodewig
parent 6dbe0022fa
commit 2f6089c2b9
1 changed files with 4 additions and 1 deletions
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5
docs/reference/snapshot-restore/index.asciidoc
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@ -63,6 +63,10 @@ or 6.x, snapshots of indices created in 2.x **cannot** be restored to 6.x
or 7.x, and snapshots of indices created in 5.x **cannot** be restored to 7.x
or 8.x.
We do not recommend restoring snapshots from later {es} versions in earlier
versions. In some cases, the snapshots cannot be restored. For example, a
snapshot taken in 7.6.0 cannot be restored to 7.5.0.
Each snapshot can contain indices created in various versions of {es},
and when restoring a snapshot it must be possible to restore all of the indices
into the target cluster. If any indices in a snapshot were created in an
@ -90,4 +94,3 @@ include::restore-snapshot.asciidoc[]
include::monitor-snapshot-restore.asciidoc[]
include::../slm/index.asciidoc[]