[gpfsug-discuss] Snapshots for backups

[valdis.kletnieks at vt.edu]

On Tue, 08 May 2018 14:59:37 -0000, "Lloyd Dean" said:
> First it must be understood the snap is either at the filesystems or fileset,
> and more importantly is not an application level backup. This is a huge
> difference to say Protects many application integrations like exchange,
> databases, etc.

And remember that a GPFS snapshot will only capture the disk as GPFS
knows about it - any memory-cached data held by databases etc will *not*
be captured (leading to the possibility of an inconsistent version being snapped).
You'll need to do some sort of handshaking with any databases to get them
to do a "flush everything to disk" to ensure on-disk consistency.
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