Membase stores the persisted data in an sqlite3
database. Each database is split into four shards with metadata in a
database with the bucket's configured name. For example, a bucket
named 'default' has the following five files:
default default-0.mb default-1.mb default-2.mb default-3.mb
The files are stored by default in
/opt/membase/var/lib/membase/data. This path
can be changed on a per-node basis when initially setting up the
node: Chapter 3, Getting Started with Membase Server
When backing up or restoring a bucket, all files must be included.
Make sure that any restoration of files also sets the proper ownership of those files to the membase user