Re: [Nolug] Backing up linux

From: Petri Laihonen <>
Date: Fri, 15 Feb 2008 20:29:24 -0600
Message-ID: <>

Ron Johnson wrote:
> On 02/15/08 14:29, Joey Kelly wrote:
>> On Friday 15 February 2008 02:19:02 pm Ron Johnson wrote:
>>> Disks are *really* cheap. Unless you are a cheap bastard or need
>>> 10TB with the speed that only jillions of 15K RPM 73GB spindles and
>>> a 4Gbps SAN with 64GB cache RAM can give you, no one should use
>>> RAID-5 anymore.
>> If you guys remember, a couple of years back google released their study about
>> storage options, where they used their in-house disk farms as raw data. They
>> came back and said to forget RAID, and just make three or four copies of your
>> data, at least some of which needs to be off-site.
> You need all sorts of metadata and supporting utilities to (a) make
> the copies, (b) ensure that the copies are updated when the
> originals are modified, and (c) tell the users where to look for the
> data when the first device dies.
> That equals *lots* of extra overhead.
>> One week later, another large company released a separate study, which said
>> essentially the same thing.
And who needs google type of storage at home or in most small or mid
range businesses. Actually I might.... :-)
I still keep my raid as redundant backup storage.... It is a lot easier.

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