Summary: Works as advertised. I use these drives to add to my RAID 5 configuration on a home server I have. I don't run my server 24/7 so I can't comment on enduring performance but these drives work fine.
Summary: If you are buying one of these drives at this point, you aren't doing any groundbreaking computing. You are just trying to keep an old system alive a little bit longer. I purchased one of these drives to replace a failing drive in a raid 10 array. It works fine in my Dell poweredge 2900.
The 4 drives I bought were EXACT duplicates of my Dell PowerEdge 1950 drives including the trays.
Christian TV Corp, Amazon
20 June 2014
Summary: I am very impressed that these Seagate ST373455SS-DELL CHEETAH 73GB 15K.4 SAS DELL (ST373455SSDELL) drives included the mounting trays. All I had to do is slide out a bad drive and slide in one of these new drives.