[Pc_Support] Re: Backup methodology -- centralize for lower TCO

[William A. Mahaffey III]

Bryan J. Smith wrote:

<snip>

>[**NOTE:  3Ware has added a new 9590SX series that is PCIe.  It seems to
>be the 9550SX with a PCI-X to PCIe bridge, so it might work just fine.
>But I haven't tried it personally.  BTW, the 9550SX products seem to be
>the best for 4+ channels now -- the firmware issues all shaken out. ]
>
>Then you basically:  
>- Do a full backup of every system you want backed up
>- Then delta all systems every night
>
>After that you have full copies of everything.  If your backup software
>is "smart," it can maintain those multiple "deltas" (like snapshots) and
>let you restore from select points in time -- right from disk, over the
>network.
>
>At the same time, you can put whatever you want to tape, directly from
>that centralized backup server.  You don't have to slam you network with
>traffic.  The _only_ traffic on your network are those _small_,
>_incremental_ deltas that occur at night from the servers/workstations
>to the backup server.
>  
>

Is there any *free* way to do that delta/incremental near-line backup ? 
I am doing full near-lines, every night, A/B-style (so I have 2 full 
copies, the older of which is overwritten with each new copy). How much 
time penalty is there in doing deltas vs. full ?

-- 
	William A. Mahaffey III

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