Re: [Zope-dev] HA storage for zope

2009-06-16 Thread Chris Withers
Shane Hathaway wrote: Chris Withers wrote: It's a shame that the 2 or 3 times I've tried to organise purchase of ZRS for customers, the Zope Corp sales process hasn't succeeded in delivering anything :-( (I'm not 100% on the details, but it may just have been that the prices were

Re: [Zope-dev] HA storage for zope

2009-06-12 Thread Chris Withers
Jim Fulton wrote: Note that ZRS has been used for years in large-scale critical environments. Also note that ZRS 2, which we've been using in production for more than 2 years doesn't use spread and is much easier to configure and more flexible than earlier versions. See

Re: [Zope-dev] HA storage for zope

2009-06-12 Thread Shane Hathaway
Chris Withers wrote: It's a shame that the 2 or 3 times I've tried to organise purchase of ZRS for customers, the Zope Corp sales process hasn't succeeded in delivering anything :-( (I'm not 100% on the details, but it may just have been that the prices were extortionate...) I disagree.

Re: [Zope-dev] HA storage for zope

2009-06-11 Thread Jim Fulton
On Jun 2, 2009, at 7:04 PM, Miles Waller wrote: ... 3. ZRS If I'm right, ZRS still has a limitation in that there is a single server for writes. Yup. ... Having read the factsheet, I'm a bit unsure as to how it is functionally different from ZeoRAID - can anyone explain? I'm not

Re: [Zope-dev] HA storage for zope

2009-06-03 Thread Miles Waller
Is there anything else worth considering? Dedicated HA-hardware. We are using a SUN Cluster for all of our backend service like ZEO, Oracle, Postgres and LDAP. I'm interested in how that works specifically with zeo. how does it ensure the clustered Zeos don't try to write conflicting

Re: [Zope-dev] HA storage for zope

2009-06-03 Thread Jens W. Klein
Am Wed, 03 Jun 2009 00:04:12 +0100 schrieb Miles Waller: Hi, I'm looking at a HA setup for a project, and was wondering what the current best way forward would be. There seem to be a few potential options around for the storage end of the setup, and I'm wondering what's now considered the

Re: [Zope-dev] HA storage for zope

2009-06-03 Thread Wichert Akkerman
Previously Miles Waller wrote: Hi, I'm looking at a HA setup for a project, and was wondering what the current best way forward would be. There seem to be a few potential options around for the storage end of the setup, and I'm wondering what's now considered the current best practice for

Re: [Zope-dev] HA storage for zope

2009-06-03 Thread Martijn Pieters
On Wed, Jun 3, 2009 at 01:04, Miles Waller mi...@jamkit.com wrote: 1. RelStorage Using this, I think I can then take care of replication/mirroring as I have access to a database that is already clustered in a HA environment.  My questions are:  + Are the connections opened only when zope is

Re: [Zope-dev] HA storage for zope

2009-06-03 Thread Miles Waller
Hi Jens, * ** I'm looking at a HA setup for a project, and was wondering what the ** current best way forward would be. There seem to be a few potential ** options around for the storage end of the setup, and I'm wondering ** what's now considered the current best practice for this sort of **

Re: [Zope-dev] HA storage for zope

2009-06-03 Thread Shane Hathaway
Hanno Schlichting wrote: Wichert Akkerman wrote: [lots of great info about RelStorage] I couldn't have said it better. :-) Thanks guys. Shane ___ Zope-Dev maillist - Zope-Dev@zope.org http://mail.zope.org/mailman/listinfo/zope-dev ** No cross

[Zope-dev] HA storage for zope

2009-06-02 Thread Miles Waller
Hi, I'm looking at a HA setup for a project, and was wondering what the current best way forward would be. There seem to be a few potential options around for the storage end of the setup, and I'm wondering what's now considered the current best practice for this sort of setup. Specifically,

Re: [Zope-dev] HA storage for zope

2009-06-02 Thread Andreas Jung
On 03.06.09 01:04, Miles Waller wrote: Is there anything else worth considering? Dedicated HA-hardware. We are using a SUN Cluster for all of our backend service like ZEO, Oracle, Postgres and LDAP. -aj begin:vcard fn:Andreas Jung n:Jung;Andreas org:ZOPYX Ltd. Co. KG