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Couchbase Server Manual 2.0
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2 Installing and Upgrading
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2.5. Upgrading to Couchbase Server 2.0.x

2.5.1. Online Upgrades
2.5.2. Online Upgrade Using Swap Rebalance
2.5.3. Offline Upgrade Process

Important

Upgrades from Couchbase Server 1.8.0 to 2.0 or earlier releases are not supported.

Upgrades from Couchbase Server 2.0 Beta or earlier releases to 2.0 are not supported.

You can perform a cluster upgrade in two ways:

FeatureOnline UpgradesOffline Upgrades
Applications Remain AvailableYesNo
Cluster Stays in OperationYesNo
Cluster must be ShutdownNoYes
Time RequiredRequires Rebalance, Upgrade, Rebalance per NodeAll nodes in Cluster is Upgraded at Once

Best Practice: Backup your data before performing an upgrade

Before you perform an upgrade, whether it is online or offline, you should backup your data, see Section 5.6, “Backup and Restore”.