Linked by Thom Holwerda on Tue 6th Dec 2005 13:18 UTC, submitted by cpina
"Although having this reputation, my question was: was a RAID 1 system too slow? Was it slower than not having any RAID? In fact, there are people that say that it is the other way round - these people say that having software RAID 1 is faster than having just one hard disk drive. In any case, who is right?" 
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Member since:
2005-07-07
Really, I don't mind software RAID 1 at home... In a home environment RAID 1 does a good job helping to make sure you don't lose all of that precious 'media / data' you have collected over the years (I don't have 24TB though).
If you are concerned with speed (or space) put your 'multiuser media' directory (Oh, and think up a good permissions regime while you're there, you don't want you idiot cousin to delete a couple of gigs of your files), and a backup of your package lists on the RAID 1 array, and move users' document directories to there (and link them back to their homes). Backup any 3rd party software your distro doesn't package (ie. Loki games). Include the home directories if you are that concerned with people losing their desktop settings. Then keep the rest of the root filesystem on a normal (ie. non-RAID 1) partition(s)).
Since every distro worth it's salt has a 'netinst', and because broadband is readily available, so long as you have a package list, installing to a new drive should be trivial (with free software, and pre-rolled binaries).
Really, if you are concerned with the speed of RAID 1 just put the stuff you can't afford to lose on the RAID 1 array (AKA- 'Media', 'Data', 'backups of Unpackaged 3rd party software', and a 'package list'). Then you'll get 'normal' speed (or save space) for the things you want to be fast... Well, it's worked well for me that way... YMMV.