Michael Hennebry wrote:
> On Thu, 27 Feb 2014, Kenny Noe wrote:
>
>> Thanks to all the replies... Very interesting stuff... However I'm
>> still trying to understand how to have a hardware RAID 5 (4x 1TB disk)
system
>> and load CentOS on it. I'm looking for the UEFI bios but don't understand
>> this. I want to install LVM on top of the single RAID volume, then I
>> can create several LVMs like the HowTos, Wikis and Blogs all say. I just
>> can't get over this first hurdle and get the OS to boot.
>
> UEFI can address 4TB.
> If you are using BIOS, that could be a problem.
> With 512-byte sectors, 2TB is about the maximum representable offset.
>
> BTW all the documentation I've seen about BIOS
> boot sequences assume 512-byte logical sectors.
> How is BIOS supposed to handle 1024-byte or larger logical sectors?
>
We've gone, I think, to GPT on our new builds. Root drives are running 2TB
these days for us, and we're not setting on UEFI. Note that a lot of the
drives are actually 4k sectors, but present them, logically, as 512byte
sectors.
mark