Text 162, 43 rader
Skriven 2006-06-18 10:26:24 av Mike Luther (1:117/3001.0)
Ärende: File mirroring in OS/2
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Help please?

A while back I think mention was made of what I envision is a little used
capability of OS/2 to maintain a mirror image file of a file elsewhere in the
'system'.  Would someone here be able to point me in the right direction to
enable this for study?

Does this have to be on the main OS/2 installation, say a mirror of a file
which is in a different directory, on a different partition?  Or can this be on
a separate box across an OS/2 LAN?  Or can this be,perhaps, on a separate OS/2
operation across the Internet or, perhaps across a VPN?

And if the target hardware operation which is to host the mirrored file goes
down for whatever time, then when it comes back up does it automagically then
go about the busy task of updating the mirror automagically?

Such that I could thus 'mirror' all the critcal data files on a mission
critical discrete OS/2 system, off site, without the use of backup techniques
such as tape or disk cloning?  Thus not having to take the critical system
off-line to do the backup.  And .. for example, in the case of DB2 or like it,
having to suffer the time loss when say a couple hours into the burn on a tape,
there is an error?  Which makes you start all over for yet another two hours of
needed time to be sure you can rebuild a system just in case?

In a kind of a way, I visualize something like a RAID drive operation where we
are not talking ability for pure 'drive' failure of one of the hardware units,
such that the true host could keep on functioning should a part of the mirror
operation go down.  But at least at the mirror site or sites, even across many
miles of space, there would always be a duplication of the data in a mission
critical operation, should the actual host fail for one reason or another.


Thanks!


--> Sleep well; OS/2's still awake! ;)

Mike @ 1:117/3001



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