http://public.dhe.ibm.com/common/ssi/ecm/en/tsd03124usen/TSD03124USEN.PDF :
Supported drives6 Gbps SAS 3.5-inch drives:300 GB, 450 GB and 600 GB 15k rpm
2 TB and
3 TB 7.2k rpm nearline6 Gbps SAS 2.5-inch drives:146 GB 15k rpm
300 GB 10k rpm
300 GB 15k rpm
600 GB 10k rpm
900 GB 10k rpm
1 TB 7.2k rpm nearline
300 GB 10k rpm SEDSolid-state SAS 2.5-inch drives*:
200 GB and 400 GB SSD
is the HGST Drive "nearline"?
http://www.hgst.com/hard-drives/enterprise-hard-drives/enterprise-sata-drives/ultrastar-7k3000has a compatability sheet.
I dont know alot about these big storage thingos, but maybe find out what the hell "nearline" is and if the Hitachi drive is one, because I couldnt see it mentioned on the drive spec sheet.
I just got a Dell server with a PowerVault RD1000 removable disc drive unit and some few "cartridges" for backup. I thought I was getting 6 1Tb HDDs.. these cartridges appear to have actual laptop HDDs in them, great I love learning about new crap I dont care about a whole lot.