File: gdbm.info,  Node: Availability,  Next: Numsync,  Prev: Performance Impact,  Up: Crash Tolerance

17.7 Availability
=================

To ensure that application data can survive the failure of one or more
storage devices, replicated storage (e.g., RAID) may be used beneath the
reflink-capable filesystem.  Some cloud providers offer block storage
services that mimic the interface of individual storage devices but that
are implemented as high-availability fault-tolerant replicated
distributed storage systems.  Installing a reflink-capable filesystem
atop a high-availability storage system is a good starting point for a
high-availability crash-tolerant 'GDBM'.