The following list provides a summary of the known limitations within Couchbase Server 1.8.
Amazon "micro" and "small" instances are not supported.
Workaround: It is a best practice to use at least "large" instances to provide enough RAM for Couchbase to run.
Couchbase Server fails to run on Windows system with PGP (http://www.pgp.com) installed.
Workaround: Uninstall PGP on any systems running Couchbase.
Network Filesystems (CIFS/NFS) are not supported for data file storage. Block-based storage (iSCSI, EBS, etc) work correctly.
Unsynchronized clocks can lead to UI not displaying graphs.
Workaround: Make sure all the clocks (and their timezones) are synchronized in a Couchbase cluster. Use NTP or some other synchronization technology.
Rebooting a node that re-enables the firewall service on that node will mark all the vBuckets on the node as dead and unavailable.