![]() This software makes the classic mistake of abstracting out the network. However, the network disks are treated as just local disks and that’s what kills performance. Network backup is added as an afterthought. Some optimization is done for tape drives, but very little for disks. Thus there’s an implicit assumption that device access is pretty fast. The problem, I suspect, is that much (not all) backup software was originally designed for local devices only. ![]() However in this field the lesson does not seem to have been as widely learned. However, recently I’ve realized that another field has just as big a problem with network overhead as do database apps. Programmers who work with databases have either learned this lesson or involuntarily changed careers. That’s what a lot of middleware is about. There are numerous frameworks designed to make this sort of optimization automatically. Most programmers who write database facing applications already know all this.
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