Hello hifiaudio23,  So for an MD1000 it needs to be attached to a raid controller & not just a SAS 6gb card. When we sold these systems they normally came with a PERC (Poweredge Expandable Raid Controller) that would go into your server and then you could see the MD1000. Is your SAS 6/e card a raid controller card or just a SAS 6/e Non Raid card? Please let us know if you have any other questions.
This is a home build for a media server,  so it is also my first foray into Server 2012 (essentials) and OMSA... so I undoubtedly did something wrong.  I have an MD1000 with 4 4tb sas drives connected to a sas 6 /e card running a parity ReFS Storage space.  All seems to be working fine, but I cannot see the MD1000 in OMSA 8.1.  I can see the sas 6 card and its firmware / driver, etc,  but the MD1000 does not appear anywhere.   I want to be able to view its temp levels, etc. (Mainly because I intend to replace the stock power supply fans with quieter ones and want to see if there is a lot of difference in temps. How can I get it to show up? 
OMSA cannot see my MD1000