[Zope-Annce] ZRS Now Available for FREE 30-day Evaluation

Brian Lloyd brian at zope.com
Fri Sep 30 22:56:49 EDT 2005

Hi all,

We are happy to announce that Zope Corporation is now 
offering Zope Replication Services (ZRS) in a 30-day 
evaluation format!

For more information and to download the evaluation 
release, visit:


About ZRS:

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 
thirty days.

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        brian at zope.com
V.P. Engineering   540.361.1716              
Zope Corporation   http://www.zope.com 

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