vincentfox wrote:If you want backups these days, the best way is an external hard-drive with USB2 or Fireware or eSATA.
I agree, it's a good way, but mirroring is probably faster =) a friend of mine has a external drive for backups....I remind him once a week to back up.....he still can't think for himself
vincentfox wrote:I
There are many problems with mirroring. It doesn't fix the all-too-common accidental deletions or just plain old silent disk corruption.
apparently Microsoft is going to fix this for all of us, with windows home server, which will keep multiple backup of different revisions of files ....etc... should be interesting
vincentfox wrote:
By the way, before considering RAID-5 you should read this:
http://baarf.com/
I've seen enough RAID systems go bad in my career that I don't trust any of them any further than I can throw them. One of them was quite expensive and was slowly corrupting the RAID-5 disks until it was much too late. The data couldn't be unscrambled and due to tape rotation at this cheap-o office, there weren't backups older than a month and most of them had different forms of the corrupted files. Eventually and with a lot of work and money 80% of it was recovered and the rest had to be reconstructed or just live without.
I am a big proponent of *software* raid 5 - all raid is software it's just a matter of if the cpu is handling it or if a card is doing it.....
most of the stuff at BAARF is from the year 2000. I hate to say this but....kind of a long time ago, and hardware and sofware has improved.
mostly I use raid 5 on windows...... yes it is slow....and yes...as far as I am concerned it is rock solid and bomb proof... would I trust my data to linux or bsd raid 5? I dunno.....I am testing some variants now
raid 5 isn't a backup solution, but it is a great way to introduce a level of redundancy.
I would be in favor of software raid 5 for storage and then backing up the data on an external HDD
the external HDDs get kind of expensive though
My mistrust of RAID goes double for PC-based motherboard heavily software-driven Windows RAID systems.
In most places, RAID-10 will work acceptably and disk is cheap there is no reason for RAID-5 anymore. However this in no way removes the need for a backup strategy if your data, downtime and recovery man-hours matter like in a business use.[/quote]