Disk store access and management differs according to whether the
store is online or offline.
When a member shuts down, its disk stores go offline. When the member
starts up again, its disk stores come back online in the GemFire XD cluster.
Online, a disk store is
owned and managed by its member process.
Offline, the disk store is
simply a collection of files in your host file system. The files are open to
access by anyone with the right file system permissions. You can copy the files
using your file system commands, for backup or to move your member’s disk store
location. You can also run maintenance operations on the offline disk store,
like file compaction and validation using the
Note: The files for a disk store are used by GemFire XD as a group.
Treat them as a single entity. If you copy them, copy them all together. Do not
change the file names or permissions.
When a disk store is offline, its data is unavailable to the
GemFire XD distributed system. For partitioned tables, the data is split between
multiple members, so you can access the offline data only if you store replicas
of the partitioned table on other members of the cluster.