One of the trends in the server market is the transition to 2.5 " hard drives. Manufacturers claim to increase storage density and reduce power consumption. But how relevant is it if you count Watt, gigabyte per unit, and also remember the cost of the hard drives themselves and their controllers? Let's look at this situation using HP servers as an example. More than a year ago, HP discontinued its SCSI servers and began manufacturing SAS and SATA 2.5 form factor servers & rdquo; and 3.5 ...