“Web and network managers can now create and maintain
high-availability server clusters at a breakthrough price
point.”
“PolyServe today announced Understudy, a high-availability
server clustering software suite for e-business. This new software
product provides: sophisticated process monitoring, server
failover, network administrator notification, content
replication/synchronization and reintegration.”
“Understudy monitors IP services including HTTP, SMTP, TCP and
FTP. Upon detection of a failure, Understudy removes the failed
server from the cluster and fails-over to the secondary backup
host. Understudy then generates a network administrator
notification via email and/or page. Understudy also includes the
first commercial application of InterMezzoTM,
state-of-the-art distributed file system software developed by
Stelias Computing. Via InterMezzo, Understudy provides
sophisticated data replication and content distribution. InterMezzo
ensures that all servers in the cluster always have the most
up-to-date version of every relevant file. Thus, if a server fails
and drops out of the cluster, all file activity from that server
prior to failover will have been accurately replicated on the other
servers in the cluster, enabling uninterrupted service. Upon
recovery, a failed server can be re-integrated into the cluster
where it will be immediately and automatically updated with all
relevant file changes.”