[CentOS] low end file server with h/w RAID - recommendations

Thu Nov 2 22:13:33 UTC 2017
John R Pierce <pierce at hogranch.com>

On 11/2/2017 2:35 PM, m.roth at 5-cent.us wrote:
> John R Pierce wrote:
>> On 11/2/2017 2:18 PM,m.roth at 5-cent.us  wrote:
>>> We have a fair number of SAS 3.5" drives, and yes, 10k or 15k speeds.
>> those are internally 2.5" disks in a 3.5" frame.   you can't spin a 3.5"
>> disk much faster than 7200 rpm without it coming apart.
> Sorry, that's incorrect. I have, sitting here in front of me, a
> Dell-branded Seagate Cheetah, 600GB (it's a few years old) 15k 3.5" drive.

if you take one of those apart, you will find ~63mm (2.5") disk platters 
inside, and an identical mechanism to the 2.5" 600GB 15000 rpm drive of 
the same generation, just sitting in a larger frame.

john r pierce, recycling bits in santa cruz