HP Serviceguard Extended Distance Cluster for Linux A.01.00 Release Notes, Second Edition, May 2008

HP Serviceguard Extended Distance Cluster for Linux Release Notes
Announcements
Chapter 16
Announcements
The HP Serviceguard Extended Distance Cluster (XDC) for Linux is a
product that allows an HP Serviceguard for Linux cluster to operate
across two separate sites providing disaster tolerance for applications.
XDC uses the Linux Multiple Device (MD) driver’s software RAID
capability and its associated tool, mdadm, to replicate data across those
two sites. With Software RAID, two disks (or disk sets) are configured so
that the same data is written on both disks as one "write transaction". So
if data from one disk set is lost, or if one disk set is rendered unavailable,
the data is always available from the second disk set.
HP Serviceguard Extended Distance Cluster (XDC) for Linux is available
for use with HP ProLiant servers and HP Integrity servers running Red
Hat 4, Novell SUSE Linux Enterprise Server 9, and Novell SUSE Linux
Enterprise Server 10 through the following product number:
• T2346BA - license, media, and documentation
Licenses for HP Serviceguard for Linux for the nodes in the cluster must
be purchased separately.