Operating System Layer

The following elements appear in the Operating System Layer.

Oracle Communications Tekelec Platform (TPD)

TPD is the operating system used for LSMS on E5-APP-B. The TPD software is installed on one internal disk drive and mirrored to a second internal disk for each server.

Redundant Array on Inexpensive Disks (RAID)

The TPD uses Linux RAID for monitoring disks and recovery from disk problems. RAID provides the following benefits:

Redundancy
Recoverability from hard-disk crashes