Yes, everything will fail. However, you're talking actual device failure, but that's not the only form of data loss. You could delete something accidentally, or the OS could harf the file system. With RAID and a backup, you're protected against two types of potential data loss. That's why redundancy <> backup.
Greg > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:hardware- > [EMAIL PROTECTED] On Behalf Of James Maki > Sent: Friday, January 05, 2007 8:07 PM > To: 'The Hardware List' > Subject: RE: [H] Here comes the terabyte hard drive > > So, what is the perfect backup solution? DVDs fail. Hard drives fail. Tapes > fail. How many levels of backup are required to make a file "safe" and isn't > this redundancy? > > Jim Maki > [EMAIL PROTECTED] > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Greg Sevart > > Sent: Friday, January 05, 2007 5:52 PM > > To: 'The Hardware List' > > Subject: RE: [H] Here comes the terabyte hard drive > > > > The major fallacy in that solution is that you're treating > > redundancy and > > backup equally. RAID doesn't protect you from a horked > > partition table, > > accidentally deleted file, or blown up power supply. In my > > mind, RAID is for > > data that you'd like some level of protection on but can > > lose, whereas a > > true backup solution is for data you just can't lose. Of course, a > > combination of the two is the most ideal approach for the > > most important > > data. > > > > > > > > > > As for the backup solution, I think the only real answer is RAID. A > > > good RAID 5 setup will do the job nicely as long as you have a good > > > controller and a UPS. If you want to get really secure a RAID 50 > > > setup on independent power circuits should do the trick. > > > > > > >
