On Thu, Sep 24, 2020 at 9:26 PM Amey Abhyankar <sco1984@xxxxxxxxx> wrote:
> Hello,
>
> I have a blade server with SAS HDD's of 12TB in total.
> 3 HDD's of 4TB each.
>
> Is it possible to install Cent OS 7.8.2003 on 12TB disk space?
> I will be installing Cent OS on the bare metal HW.
>
>
the SAS hardware has to be SAS2 or newer, as SAS1 had a maximum physical
drive size of around 2tb
and the boot volume has to be GPT as MBR has a 2TB limit.
otherwise, sky is the limit, however, what the other guys say, I do NOT put
my OS on my data raids, its usually on its own mirror of two small drives.
I also tend to avoid "hardware" raid cards, and prefer HBA cards that
present the drives as plain SAS devices, then use the OS's native storage
management for raid (mdraid + LVM for Linux, ZFS on FreeBSD, etc).. I
generally spec raid 10 for performance data, and raid 6 or 60 for bulk
data. raid5 is frowned on these days, disks are so big, and rebuild times
are long enough that the risk of a double failure is fairly high.
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