I have two unrelated questions I thought some of you might be able to shed some light on:
1) I'm looking for a UPS to use with a Linux system. I'm hoping to set it up so that the system will go into hibernation once the UPS comes on, but clearly this requires that the OS be able to know the state of the UPS. What UPS manufacturers tend to have units that are well supported under Linux? It looks like APC models are usually supported. Any other good bets? 2) How much does hard drive cache size matter in a Linux system? Obviously, I understand that the HD cache is much faster than the disk itself, but I would have assumed that the OS would already do caching of data from the hard drive where possible, so it's hard to see how a measly extra 8, 16, or 24 MB of cache could really make much of a difference. But I don't know much about hardware, so there's probably something important I'm missing here. Thanks, Nick
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