jam <j...@tigger.ws> writes:
> [snip]
>
>> > Based on what you have said do yourself a favour and don't do LVM. LVM
>> > is a wonderful idea but it requires that you understand statistics
>> > related to disk failure and the consequences of that.
>>
>> This comment makes no sense to me: in what way does LVM change the risks
>> associated with disk failure? I can't think of *anything* that is at all
>> different in that regard.
>
> [snip]
>
>> Heh. Aside from the LVM bit, this is almost certainly the best advice the
>> OP has gotten. (Even LVM may be right; I just don't understand what James
>> is trying to say the problem is yet. ;)
>
> From 2nd year stats (and subject to the ravages of time on my memory): a
> display array of 10x20 1000hour lamps will have a lamp fail on average every
> 20 min !!
>
> According to Seagate the failure rate of 2 disks is much greater than 2x
> failure rate of 1 disk http://portal.acm.org/citation.cfm?id=1090724
>
> Along with all the cute benefits that LVM offer is a much higher disk
> failure rate. Is the windows-linux convert going to pay attention to needed
> backup regime?
Ah! You are making the assumption that LVM implies multiple disks!
This is absolutely not true. You /can/ use LVM to make multiple disks
available in a single pool, but using it only for a single disk is also highly
valuable.
Also, you can use it to, for example, mirror volumes, which makes a single
disk failure harmless, improving reliability.
So, you are not wrong in the case you were talking about, but that is hardly
the common case for LVM in the installer.
> I don't believe it is in the best interest of this user to do kewl rad
> stuff!
Using basic LVM, rather than fixed partitions, on a single disk, is hardly
"kewl rad stuff" these days. Just sayin'
Daniel
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