Preach on Sklad, I’ve lost count of the number of distraught customers I’ve had to “counsel” because they’ve never backed up and “my life is on that machine”, meh I have no pity for them, as I’m fond of saying, A lack of planning on YOUR part DOES NOT constitute an emergency on MY part
for example, today, I’m working on an old Mirror Door G4 tower, the customer has three internal hard drives (boot, media, and spare), the machine will not boot fully to the desktop, it hangs just before the Finder loads, yet it runs flawlessly when booted from an external…
a good guideline with hard drives is to keep at least 10% of the hard drive free, her boot drive is a 120GB hard drive, it has a mere 205 MEGABYTES of free space on it, IOW, the drive is FULL, as are her media and spare drives, and, of course, she has no backups either!
conversely, I also have a MDD G4 at home, I have four hard drives in it;
Drive 1; a bootable 10.4.2 games drive (The Sims 2 doesn’t like anything more than 10.4.2 on my MDD), 120 GB, if that drive dies, I just wipe and reinstall the OS and apps, I back up my Sims userfile once a month to DVD-R, just in case, the drive has about 60GB of free space
Drive(s) 2, a dual 160GB Mirrored RAID running 10.5.X, a mirrored RAID is two drives linked together as a single drive, when data is written to the drive, it is written to two physical drives, in essence, automatic backup, if one drive in the RAID fails, the computer can still run off the other drive just fine, just pull the bad drive, slap in a replacement drive and have the RAID auto-rebuild
Drive 3 is a 320GB drive set up as a Time Machine backup of the 160GB Mirrored RAID
and yet, I still perform regular backups on the Mirrored RAID to both DVD-R and an external drive, it’s not a matter of if a drive will fail, it’s WHEN
funny, I’ve had the MDD up and running for almost three years continuously now, and have NEVER had a single problem with any of my drives, and given the complexity of my system, a failure at some point is a given…
some further hints;
in the event of thunderstorms/hurricaines/NorEaster’s, Tornadoes, Zombie Uprisings, or other inclement weather, be sure to UNPLUG both the computer AND the Ethernet and/or modem lines from the machine , it’s the only guaranteed protection from power anomaly damage, also, invest in an Uninterruptible Power Supply, even if you have stable power (I don’t, I have the misfortune of Central Maine Power, the most incompetent power company in the galaxy) they’re worth their weight in gold, and power anomalies can happen at any time, not just during inclement weather…