My Mac Pro 4.1 (circa 2009) has a MacPro Raid Card and the software shows two storage volumes - one 1TB SAS disk and one 2 TB SAS RAID volume.
The removal of the Parallels volume leaves me with the following showing in Disk Utility:
APPLE RAID Card Media: 1 TB SAS Internal Physical Drive
____Macintosh HD 999.14 GB SAS Internal Physical Volume OS X Extended
APPLE RAID Card Media: 1.96 TB SAS Internal Physical Drive
____Untitled 1.96 TB SAS Internal Physical Volume OS X Extended
Some final context, I have repurposed this MacPro (formerly an R&D server) as a desktop. My most demanding application is Mathematica used for analytics of financial data.
As per request from comments:
System Information/Hardware/RAID/Mac Pro RAID Card/Drives lists: Bays 1 through 4, each showing an Hitachi model HDE721010SLA330 1TB HD with a different serial number. So 4 1TB HDs.
System Information/Hardware/RAID/Mac Pro RAID Card/RAID Sets: RS1 (1TB) & RS2 (1.96 TB) Status on both reporting as Viable (Good)
Should the machine have both of the above APPLE RAID Card Media volumes?
Why aren't they the same size and how do I tell if I have RAID for protection or for speed?
Basically, can someone explain what the above information means and provide suggestions to set this up properly?