[CentOS] Booting Software RAID

>>> Based on input from everyone here I am thinking of an alternate setup.
>>>   Single small inexpensive 64GB SSD used as /boot, / and swap.  Putting
>>> /vz on software RAID1 array on the two 4TB drives.  I can likely just
>>> zip tie the SSD in the 1u case somewhere since I have no more drive
>>> bays.  Does this seem like a better layout?
>>
>> As long as you have duplicate SSD as backup and regularly backup /boot
>> to that other SSD, it should be OK. Loosing SSD and /boot with new
>> kernels would be a mayor problem for you, you would need to recreate them.
>
> I am thinking I will not have much I/O traffic on the SSD hopefully
> extending its lifespan.  If it dies I will just need to reinstall
> Centos on a replacement SSD.  My critical files will be in /vz that I
> need backup on and I think RAID1 will give me double read speed on
> that array.  Trying to balance cost/performance/redundancy here.

If I am putting both 4TB drives in a single RAID1 array for /vz would
there be any advantage to using LVM on it?