Tape Libraries (Automated Cartridge Systems)

The tape libraries serve as second level in the storage hierarchy for three central services.

Backup and Restore of data
Long term archival of data
Migration of active (online) data to less expensive storage media
- User data in the GPFS archive file systems of the HPC systems are automatically migrated to tape by the HSM (Hierarchical Storage Manager) component of TSM (Tivoli Storage Manager). The selection criteria for the migration are age and size of a file. The user data will be recalled automatically and transparently for the user when they are accessed.
- Project related data in the dCache-System are automatically migrated to tape by the TSM-HSM API interface of the Pool servers. The data will be recalled automatically and transparently for the user when they are accessed.

Users of the HPC systems, workstations and PCs have access to their data (Backup, Archive, Migration) in the libraries during 24 hours a day and 7 days a week.

Total Numbers
Actual capacity	~ 80 PB
Planned capacity (in 2016)	100 PB (11000 x 8.5 TB + 5600 x 1 TB)
Maximum capacity (theoretical)	141 PB (16600 x 8.5 TB)
Tapes	16600
Tape drives	48
Libraries	2 (at different locations in JSC)

Hardware Characteristics of the Tape Libraries Complex
1 STK Streamline SL8500 Actual capacity: ~ 35 PB 4000 cartridges T10000T2, each 8 - 8.5 TB with T10000D 2600 cartridges T10000T1, each 1 TB with T10000B Tape Slots: 6600 Tape drives: 24 17 x T10000D 7 x T10000B Transfer rate: T10000D: up to 240 MB/sec T10000B: up to 120 MB/sec
1 STK Streamline SL8500 Actual capacity: ~ 45 PB 5100 cartridges T10000T2, each 8 - 8.5 TB with T10000D 4400 cartridges T10000T1, each 1 TB with T10000B Tape Slots: 10000 Tape drives: 24 17 x T10000D 7 x T10000B Transfer rate: T10000D: up to 240 MB/sec T10000B: up to 120 MB/sec
1 Management Server ( Sun Server X3-2, X86 64-bit) Intel Xeon Processor CPU E5-2609, 4 cores, 2.4 GHz, 8 GB Memory Software: Oracle Linux 6.3, ACSLS 8.3, SLC 6.25