Re: [Bacula-users] Bacula with LVM

On 02/18/10 08:52, John Drescher wrote:
>> I have a File Server with 12 hardisks.
>> I used LVM technology.
>> I wanna ask, what should I do if there are one hardisk crash in File Server?
>> What effect by LVM?
>>
> 
> I use LVM on every server that I have. I follow one very important
> rule. Never use any PV (physical volume) inside the LVM that is not a
> RAID 1 or better. If you use individual drives in your LVM you are
> just asking for your data to be sent to the bit bucket.. This spanning
> usage of LVM is not much better than RAID0.

And just as a reminder ...  RAID0 should ONLY ever be used in cases
where you want the maximum speed of access to the data, but DON'T CARE
IF YOU LOSE IT.  (For example, if it's all easily replaceable read-only
data.)  Because if you lose any one volume from a RAID0, the whole
dataset is toast, and any RAID0 of N disks is N times more likely than a
single disk to suffer a disk failure.


-- 
  Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
  alaric AT caerllewys DOT net   alaric AT metrocast DOT net   phil AT 
co.ordinate DOT org
         Renaissance Man, Unix ronin, Perl hacker, Free Stater
                 It's not the years, it's the mileage.

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