1/20/2020 - HPSS is now read-only.
11/14/2019 - HPSS will be put into read-only mode on January 20, 2020.
10/15/2019 - Users advised to move or delete all HPSS data now
NCAR’s High-Performance Storage System (HPSS) will reach its end of life on October 1, 2021. Users are advised to begin moving their data to an alternative storage system and deleting it from HPSS immediately.


HPSS at NCARThe High Performance Storage System (HPSS) consists of robotic tape libraries with storage capacity of more than 320 petabytes at the NCAR-Wyoming Supercomputing Center (NWSC) and another 15 petabytes of disaster-recovery data storage at the NCAR Mesa Lab in Boulder.

These scalable systems comprise four StorageTek SL8500 tape libraries. File metadata are maintained in DB2, IBM's real-time database system.

Scheduled preventive maintenance periods are Tuesdays from 7 to 9 a.m. Mountain time.




NWSC components

4 StorageTek SL8500 Tape libraries – 40,000 cartridge slots

46 T10000D tape drives – 240-MBps I/O rate each
9,000 T10000D media – 8 TB/cartridge, uncompressed

>320-PB capacity (uncompressed)

Mesa Lab components

2 StorageTek SL8500 Tape libraries – 15,000 cartridge slots

15-PB capacity for disaster-recovery data