IBM Ultrastar 2ES 2.2 GB

IBM Ultrastar 2ES 2.2 GB ... implementation experience in advanced disk drive technologies. These technologies include Magneto-Resistive (MR) heads, No-ID sector formatting, and the Partial Response Maximum Likelihood (PRML) digital channel.

MR heads offer increased areal density, reducing the number of disks and heads required for a given capacity. No-ID sector formatting further increases storage capacity by eliminating the overhead caused by the duplicate storage of each data sector's ID field onto the disk, creating more available disk space for customer data. The PRML digital channel now implemented on IBM's newest desktop drives such as the Ultrastar 2ES allows for higher areal densities and significantly enhances the drive's overall performance.