I'm specifically thinking things such as email and possibly our main file server, but not all VM's. The P4000 storage clustering means you could have a copy of the real-time live data in both locations.
At our size and level of business it may be a better "sell" than having a backup site full of kit that won't be used other than when the primary site is down i.e. hopefully never! Not sure single vCPU will be a problem for us, and the links would be < 1ms latency (direct fibre no hops). From: Steven Peck [mailto:[email protected]] Sent: 26 September 2010 09:44 To: NT System Admin Issues Subject: Re: SANs/Sites - Who's doing Active/Active Failover? http://communities.vmware.com/blogs/vmroyale/2009/05/18/vmware-fault-tol erance-requirements-and-limitations We are using it for fault tolerance in a site for a specific set of front ends, not for a site to site wan type DR thing but guest system is limited to 1 CPU. When we first tested it no vmotion. Looks like 4.1 fixed that, will have to test it as I hadn't known. It does work. But it counts as 2 systems when sizing your farm as it is in a continuous sync state. Steven On Sat, Sep 25, 2010 at 7:54 AM, Paul Hutchings <[email protected]> wrote: http://www.youtube.com/watch?v=6n3VpfesM8A is a video of a live site failover using vSphere FT and HP/Lefthand P4000. I've been looking at SAN/storage options and had been thinking very much in terms of "Live" and "Backup" sites. Our locations are around 3/4 of a mile apart linked by 1 or 10gig ethernet (the fibre will take 10gig so it comes down to cost and necessity). I'm now thinking why on earth wouldn't I want to go active/active if we're looking at Lefthand? I'm hoping to have them in next week to discuss options. I'm a little blown away by that video tbh as it's not using excessively expensive license options. Appreciate any thoughts on whether vSphere's FT really is good enough that you'd be content with (for example): Primary Site. ESX Host P4000 Single Switch for SAN/vSphere stuff (presumably with VLAN's to keep iSCSI and vMotion/FT traffic separated?) Secondary Site: ESX Host P4000 Single Switch for SAN/vSphere stuff I'd be interested in any feedback from those of you who are doing any kind of active/active with failover configuration. Thanks. ________________________________ MIRA Ltd Watling Street, Nuneaton, Warwickshire, CV10 0TU, England Registered in England and Wales No. 402570 VAT Registration GB 114 5409 96 The contents of this e-mail are confidential and are solely for the use of the intended recipient. If you receive this e-mail in error, please delete it and notify us either by e-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the e-mail as this is prohibited. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin
