rsync backup performance question

[Ron Arts]

Dear all,

I am implementing a backup system, where thousands of postgreSQL
databases (max 1 Gb in size) on as much clients need to be backed
up nightly across ISDN lines.

Because of the limited bandwidth, rsync is the prime candidate of
course.

Potential problems I see are server load (I/O and CPU), and filesystem 
limits.

Does anyone have experience with such setups?

Ron Arts

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