[isalist] Re: Giggles for the day
- From: Greg Mulholland <greg@xxxxxxxxxxxxxx>
- To: ISA Mailing List <isalist@xxxxxxxxxxxxx>
- Date: Sat, 30 Aug 2008 22:02:42 -0300
http://www.ISAserver.org
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the point i was trying to understand is how they enable independent migration
and failover of virtual machines in HyperV, given that a limitation of their
non clustered file system means that one storage LUN must be dedicated to each
virtual machine or else a quick migration will migrate all guests on that LUN
and not just the one you want.
That and i'd be interested to understand their definition of High Availability
as without these requirements this would mean invoking quick motion by way of a
failed host. Give the file system limitations mentioned which involves multiple
hosts not being able to read and write from the same virtual disk concurrently
this will involve a suspend of the machine and a startup on the other host,
involving lost packets and downtime. ESX doesnt have this limitation, so its
more of a increased availability and not high availability.
________________________________________
From: isalist-bounce@xxxxxxxxxxxxx [isalist-bounce@xxxxxxxxxxxxx] On Behalf Of
Jim Harrison [Jim@xxxxxxxxxxxx]
Sent: Sunday, 31 August 2008 8:58 AM
To: ISA Mailing List
Subject: [isalist] Re: Giggles for the day
http://www.ISAserver.org
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You'd assume wrong.
There is no "active/passive" context for ISA and never has been.
The failover would be between Hv hosts if it happens at all.
Like I said in the interview; this hasn't been tested specifically.
-----Original Message-----
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On
Behalf Of Greg Mulholland
Sent: Saturday, August 30, 2008 3:03 PM
To: ISA Mailing List
Subject: [isalist] Re: Giggles for the day
http://www.ISAserver.org
-------------------------------------------------------
ahhh! the interview said "quick migration"
so i have a question regarding the failover bit. i am assuming that you are
talking about isa application failover and not failover of the ISA guest to
another HV host (cos we know that just doesnt work in HV i.e quick migration)
So, id be interested to know how the shared storage part will work, presumably
the CSS will need to be on the shared storage to have a two mirrored ISA guests
and setups on separate HV hosts, any other requirements?
________________________________________
From: isalist-bounce@xxxxxxxxxxxxx [isalist-bounce@xxxxxxxxxxxxx] On Behalf Of
Thomas W Shinder [tshinder@xxxxxxxxxxx]
Sent: Sunday, 31 August 2008 6:35 AM
To: ISA Mailing List
Subject: [isalist] Re: Giggles for the day
http://www.ISAserver.org
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Excellent!
We need more of this!
Thanks!
Tom
-----Original Message-----
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
On Behalf Of Jim Harrison
Sent: Saturday, August 30, 2008 3:01 PM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Giggles for the day
http://www.ISAserver.org
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http://edge.technet.com/Media/Virtualize-your-ISA-or-Forefront-TMG-serve
rs/
..don't laugh too hard...
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