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Re[4]: off topic: backup software



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Gary,

I was really hoping you would tell us how the shadow backup works in
Windows XP.  It will back up everything even with TS2ki's server
running.  I have no clue how this can be.  The PDS data files are in
use and it backs them up just like they wern't.  Maybe some really
high tech dude can tell us.

Jimmy

Sunday, May 18, 2003, 1:20:43 PM, you wrote:

>> However, my reasoning behind daily backups in addition to
>> running DI every once in a while is to have *incremental* backup of
>> everything: 
GF> (while everything is running, I think?)

GF> Have you tested those backups?  Normally when programs open a 
GF> file, they lock it.  No other programs, and that includes backup 
GF> programs, can access the file while it's locked.  Maybe your 
GF> backup utility has some magic way of getting at the file even 
GF> when it's locked (in which case it's in danger of copying off 
GF> inconsistent data that the program is in the middle of modifying) 
GF> but I would check to make sure it's actually backing up the data 
GF> you think it is.

GF> That's why programs like DI require you to reboot to DOS.  That 
GF> way EVERY file is unlocked (not even Windows holds any open), so 
GF> every file can be backed up.

GF> Gooly wrote:
>> With an additionl PCI-card to wghich you connect two harddisk,
>> you'll have you harddisk mirrored and if one HD crashes the card (and
>> your pc) is just running normal on the other HD. 

GF> That works fine if the problem is a crashed HD.  If it's data 
GF> corruption for other reasons -- viruses, fat fingers, user 
GF> screwup, whatever -- then the RAID disk just gives you two copies 
GF> of the corrupted data.  You still need backups to be able to go 
GF> "back in time" to an uncorrupted copy before the "event" 
GF> happened.

GF> Gary




-- 
Best regards,
  Jimmy Snowden                          mailto:@aledobb.com