Re: [Fed-Talk] TimeMachine use in Fed space... opinions?
Re: [Fed-Talk] TimeMachine use in Fed space... opinions?
- Subject: Re: [Fed-Talk] TimeMachine use in Fed space... opinions?
- From: Joel Esler <email@hidden>
- Date: Wed, 4 Mar 2009 18:04:43 -0500
Wow, that's very interesting actually.
J
On Wed, Mar 4, 2009 at 6:03 PM, Timothy J. Miller
<email@hidden> wrote:
Shawn A. Geddis wrote:
Time Machine does not allow for backup to a SAN. You can assign a Time Machine backup to a network volume, but it must be one designated by a Mac OS X Server specifically for TM.
http://appleclinic.wordpress.com/2008/10/30/time-machine-on-nas/
Of course, such a thing is completely unsupported by Apple. And there is a risk: Getting an ACK packet from the NAS is not the same as having the data written to disk. So if you're using an unsupported network drive and there's a failure, you could end up with incomplete data in the backup. That's a Bad Thing.
Time Capsule gets around this problem by using a modified network stack. In short, it doesn't send ACK data packets until the disk driver confirms it's written to disk. This sort of coupling of disk driver to network driver is, shall we say, unusual. :)
-- Tim
--
Joel Esler
T: 302-223-5974 (-) Gtalk:
email@hidden[m]
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