[CentOS] Re: Anaconda doesn't support raid10

[Ruslan Sivak]

Feizhou wrote:
>
>> Originally I had boot on 2 drives raid1, with 2 more drives being 
>> hotspares.  Then I realized that this makes no sense, if you can just 
>> set up a raid1 with 4 drives (where each drive is a copy of each 
>> other).  Didn't really know if it was supported, but looks like it 
>> works.
>
> The entire use all four disks for /boot makes no sense if two disks 
> belonging to the same mirror for the lvm go down. Please stop this 
> nonsense about surviving everything to no benefit. You can have three 
> disks fail and still have a working /boot. For what?
> _______________________________________________

Feizhou,

After thinking about it for a little bit, I see your point.  If one of 
the arrays fails, the data drive is gone, and there is no point keeping 
boot after that.  This means it suffices to put /boot on the first raid1 
array. 
However, as was mentioned elsewhere in this thread, by mirroring the 
boot partition on all 4 drives, I don't have to worry about which order 
the drives are plugged in, and I can preserve disk symmetry.  Since the 
cost of the drive is about $0.25 a GB, I think wasting the $0.10 is 
worth the flexibility and peace of mind.

Russ