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Commit 7b200cc9 authored by Adam Merka's avatar Adam Merka
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Updates 5-images/README.md

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# Snapshots
Snapshot of an instance is an exact state of a VM in the moment when the snapshot was taken. Snapshots can be done on running aas well as on turned-off instances. They are useful for example when significant system changes are needed.They provide an easy roll-back option to the state before the changes. The snapshots cannot be considered a replacement for a system back-up. The snapshots neither provide a protection from a hardware failure.
Snapshot of an instance is an exact state of a VM in the moment when the snapshot was taken. Snapshots can be done on running aas well as on turned-off instances. They are useful for example when significant system changes are needed.They provide an easy roll-back option to the state before the changes. The snapshots cannot be considered a replacement for a system back-up. The snapshots neither provide a protection from a hardware failure.
HOW TO via CLI: h[ttps://docs.openstack.org/mitaka/user-guide/cli\_use\_snapshots\_to\_migrate\_instances.html](https://docs.openstack.org/mitaka/user-guide/cli_use_snapshots_to_migrate_instances.html)
......@@ -8,7 +8,7 @@ store metadata: [https://docs.openstack.org/mitaka/user-guide/cli\_config\_drive
## Replikace
Replication is the act of continuous copying of the instance content \(more specifically \) to a separate
Replication is the act of continuous copying of the instance content \(more specifically \) to a separate
Při replikaci se průběžně kopíruje obsah \(respektive probíhající změny\) virtuálního serveru na oddělené úložiště. V případě poruchy hardwaru, na kteréxm virtuální server běží, je možné virtuální server nastartovat z takto udržované repliky. Tato replika není zcela identická s původním virtuálním serverem. Je v ní uložen snímek provozovaného virtuálního serveru, s určitým \(obvykle několikaminutovým\) zpožděním oproti aktuálnímu stavu provozovaného virtuálního serveru. Jedná se o asynchronní proces.
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