We are happy to announce that Zope Corporation is now
offering Zope Replication Services (ZRS) in a 30-day
For more information and to download the evaluation
Zope Replication Services (ZRS) increases the reliability
of all Zope enterprise clusters and eliminates the storage
system as a single point of failure.
Sites with high availability requirements must manage
planned and unplanned downtimes. Planned outages include
system maintenance, software / operating system upgrades,
and backups. Unplanned outages include hardware and network
failures. ZRS reduces the downtime associated with these
events by replicating and distributing mission-critical
data storage across distinct physical storages (possibly
in distinct geographic locations).
Should a primary storage fail, a secondary storage can
take its place. Secondary servers can be taken off-line
at any time to undergo repairs, backups, or system
upgrades. When a secondary returns to service, it
automatically resynchronizes with the primary server.
ZRS also improves scalability since secondary servers can
optionally provide additional read-only ZEO connections
while maintaining their replication functions. ZEO client
storages can be configured to connect to any available
secondary, and can be load-balanced among the available
secondary ZRS servers to implement highly-available and
highly-scalable Zope clusters.
ZRS is a 'battle-tested' solution that has provided the
high-availability and disaster recovery solution critical
to large-scale public and internal Zope deployments for
years. Premier brands including the VIACOM radio and
television group, AARP, Community Newspaper Holdings
Inc. (CNHI), and the Joint Intelligence Center, Pacific
(JICPAC) rely on ZRS to ensure reliability and scalability
for their mission-critical Web sites.
The 30-day evaluation release allows organizations to
install and operate ZRS on up to five primary ZODB servers
and on an unlimited number of secondary servers for up to
The current evaluation release (ZRS 1.4.2) is compatible
with Zope versions 2.4 - 2.7. Full releases of ZRS
compatible with Zope 2.8.x and Zope 3.x are also available.
Brian Lloyd [EMAIL PROTECTED]
V.P. Engineering 540.361.1716
Zope Corporation http://www.zope.com
Zope maillist - Zope@zope.org
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