In October 2003, MDPS (Mass Data Processing System) was installed as a massively data storage system which renews the tape library system. It consists of four file?service processors (FSPs), 250TB hard disk drives, and a currently used 1.5 PB cartridge tapes library (CTL).
MDPS was adopted aiming to improve data transfer throughput and accessibility.

1. The transfer speed of saving and extracting the data between the ES and the storage became 2-5 times faster. This improvement can be realized by expansion of transfer cable ability and replacement a tape archive with disks.
2. User view is a very large disks and usual UNIX commands and tools can access the MDPS data on the login server. Data I/O procedure becomes easy.
3. MDPS makes users access as far as the results by ES, because it can transfer the data to a dedicated server out of ES LAN (ES-Network FTP Server).
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