Folks,

I have a simple question: Does anyone use the disk backup option to restore
from disk?

We recently implemented a disk backup solution with the intention of keeping
our backups on disk for three days, and then staging backups older than
three days to tape.

The whole point of this was not only to speed up backups, but also to speed
up recoveries, mainly because a number of our systems have pretty tight
Disaster Recovery Time Objectives. We were hoping that we could minimise our
need to use tapes for recoveries, as the most recent data would be on disk.

In the course of the last week it has come to light that it is well nigh
impossible to do a recovery from an advanced file device at the same time as
you are writing data to, or staging from that advanced file device. We have
had a few calls open with Legato and the feeling we are getting, rightly or
wrongly, is that the disk backup option is not intended to facilitate
restores from disk. It is primarily there to facilitate cloning and staging,
and that restores should take place using tape - not disk.

Does anyone else have any experience of this? Is anyone else backing up to
disk and subsequently restoring from disk? Can you do both operations
simultaneously? 

Your feedback would be much appreciated.

Thanks,
Stephen

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