Re: [Dovecot] Highly Performance and Availability

2010-02-22 Thread Stan Hoeppner
Ed W put forth on 2/22/2010 7:03 AM: > Can you tell me exactly what "Consolidated Backup" means with respect to > ESX please? From the brief description on the website I'm not quite > sure how it varies to say backing up the raw storage using some kind of > snapshot method? Here's a decent write

Re: [Dovecot] Highly Performance and Availability

2010-02-22 Thread Ed W
Hi HA, Consolidated Backup, and a couple of other technologies are what really make this an enterprise solution, providing near 24x7x365 uptime and rapid redeployment of an infrastructure after catastrophic loss of the datacenter. Can you tell me exactly what "Consolidated Backup" means

Re: [Dovecot] Highly Performance and Availability

2010-02-22 Thread Ed W
On 19/02/2010 21:40, Wayne Thursby wrote: Thank you to everyone who has contributed to this thread, it has been very educational. Since my last post, I have had several meetings, including a conference with Dell storage specialists. I have also gathered some metrics to beat around. The EqualLog

Re: [Dovecot] Highly Performance and Availability

2010-02-19 Thread Stan Hoeppner
Wayne Thursby put forth on 2/19/2010 3:40 PM: > Thank you to everyone who has contributed to this thread, it has been > very educational. > > Since my last post, I have had several meetings, including a conference > with Dell storage specialists. I have also gathered some metrics to beat > around.

Re: [Dovecot] Highly Performance and Availability

2010-02-19 Thread Wayne Thursby
Thank you to everyone who has contributed to this thread, it has been very educational. Since my last post, I have had several meetings, including a conference with Dell storage specialists. I have also gathered some metrics to beat around. The EqualLogic units we are looking at are the baseline

Re: [Dovecot] Highly Performance and Availability

2010-02-18 Thread Eric Rostetter
Quoting Stan Hoeppner : - Add redundancy to the storage using DRDB (I believe a successful strategy with Dovecot is pairs of servers, replicated to each other - run each at 50% capacity and if one dies the other picks up the slack) DRDB is alright for a couple of replicated hosts with moderate

Re: [Dovecot] Highly Performance and Availability

2010-02-17 Thread Stan Hoeppner
Ed W put forth on 2/17/2010 12:25 PM: > I think Stan pretty much covered how to do this stuff *properly*, At least for a VMware ESX + SAN environment, yes. > however, for those following along in the bedroom, there are a couple of > interesting projects what might get you some of the ESX features

Re: [Dovecot] Highly Performance and Availability

2010-02-17 Thread Ed W
I think Stan pretty much covered how to do this stuff *properly*, however, for those following along in the bedroom, there are a couple of interesting projects what might get you some of the ESX features (surely at the expense of far more support and likely reliability, but needs always vary...

Re: [Dovecot] Highly Performance and Availability

2010-02-16 Thread Stan Hoeppner
Wayne Thursby put forth on 2/16/2010 9:42 AM: > I was planning on using EqualLogic because the devices seem competent, > and we already have an account with Dell. Also, being on VMware's HCL is > important as we have a support contract with them. Using the standard Gbe ports on the servers won't

Re: [Dovecot] Highly Performance and Availability

2010-02-16 Thread Wayne Thursby
Stan Hoeppner spake: > Wayne Thursby put forth on 2/15/2010 11:42 PM: >> I have been looking at the Dell EqualLogic stuff and it seems to provide >> what we need. I can get most of the information I need from the rep, but >> I wonder if anyone has any experience with high performance requirements >

Re: [Dovecot] Highly Performance and Availability

2010-02-16 Thread Stan Hoeppner
Dominik Schulz put forth on 2/16/2010 3:33 AM: > Am Dienstag 16 Februar 2010 06:42:57 schrieb Wayne Thursby: >> We are transitioning other services to high availability, and I'm wondering >> exactly how to provide some kind of near-realtime failover for my >> Postfix/Dovecot machine. The MD-1000 pr

Re: [Dovecot] Highly Performance and Availability

2010-02-16 Thread Stan Hoeppner
Wayne Thursby put forth on 2/15/2010 11:42 PM: > Hello everyone, Note domain in my email addy Wayne. ;) > I have been looking at the Dell EqualLogic stuff and it seems to provide > what we need. I can get most of the information I need from the rep, but > I wonder if anyone has any experience wit

Re: [Dovecot] Highly Performance and Availability

2010-02-16 Thread Dominik Schulz
Am Dienstag 16 Februar 2010 06:42:57 schrieb Wayne Thursby: > We are transitioning other services to high availability, and I'm wondering > exactly how to provide some kind of near-realtime failover for my > Postfix/Dovecot machine. The MD-1000 provides nothing in the way of iSCSI, > but it *does*

[Dovecot] Highly Performance and Availability

2010-02-15 Thread Wayne Thursby
Hello everyone, I am currently running Dovecot as a high performance solution to a particular kind of problem. My userbase is small, but it murders email servers. The volume is moderate, but message retention requirements are stringent, to put it nicely. Many users receive a high volume of e