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Incremental Scalability
Based on storage needs and deployment schedules, HPSS scales incrementally by adding computer, network and storage resources. A single HPSS namespace can scale from petabytes of data to exabytes of data, from millions of files to billions of files, and from a few file-creates per second to thousands of file-creates per second.
About HPSS   :    HPSS Tape Library Efficiency
HPSS Tape Library Efficiency on Versions 7.5.2 and 7.5.3

HPSS versions 7.5.2 and 7.5.3 include new features that directly improve tape library mount rates across multiple tape library types. Improved tape library efficiency reduces the access latency for data on tape. In these versions, HPSS streamlines the way cartridge move requests are processed to maximize efficiency.

7.5.2 Tape Library Efficiency Improvements

Tape improvements have been made to HPSS version 7.5.2 which significantly raise the mount rate efficiency of tape libraries. SCSI PVR improvements that create this increase in efficiency include:

  • Expediting command processing by minimizing communications with the library before sending each command.
  • Further reducing individual move request overhead by minimizing waits during retries
  • Allowing a single control path to queue up to 16 commands by implementing SCSI command queuing
  • Implementing a move scheduler to interlace tape mounts and tape dismounts so the robot is always holding a tape when moving

These changes to HPSS version 7.5.2 drive HPSS efficiency with IBM TS4500 tape libraries from 78% on version 7.5.1 to 99%. The mount rate on 7.5.1 was 702 mounts per hour; it has risen to 894 mounts per hour on 7.5.2.

HPSS 7.5.2 almost doubles the mount rate efficiency with Spectra Logic Libraries from the efficiency seen on 7.5.1. Mount rate efficiency has grown from 42% to 80% on 7.5.2.* The ability to submit multiple move requests with HPSS 7.5.2 has allowed HPSS to support Spectra Logic library's capability to efficiently order multiple requests.

The following graph illustrates the increased mount rate performance with HPSS 7.5.2:

7.5.3 Tape Library Efficiency Improvements

HPSS 7.5.3 improves tape library efficiency further. These improvements include the following new features:

  • Detection of Spectra Logic library zones so that both robot arms are kept busy.
  • Detection of Spectra Logic TeraPack boundaries in the robot and grouping moves by TeraPack so that multiple cartridges can be mounted and dismounted with each TeraPack move.
The combination of these features allows HPSS 7.5.3 to drive mount rate performance to the hardware rate.

On version 7.5.3, HPSS efficiency with the IBM TS4500 has been maintained at 99% (from version 7.5.2). With Spectra Logic tape libraries, mount rate efficiency has been improved to 99% from 80% on 7.5.2.*

The following graph illustrates the mount rate performance with HPSS 7.5.3:

Future HPSS Versions

In future versions of HPSS, maintaining high mount rate efficiency is a priority. The HPSS roadmap is full of library performance improvements. The HPSS goal is to sustain 99% library efficiency with both IBM TS4500 and Spectra Logic libraries as improvements arrive.


*Please contact Spectra Logic about tape library mount rate expectations.

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2020 HUF - VIRTUAL
The 2020 HPSS User Forum (HUF) will be hosted virtually due to the COVID-19 pandemic. It will be hosted online for six days spread across three weeks in October 2020 with no admission cost. This will be a great opportunity to hear from HPSS users, collaboration developers, testers, support folks and leadership (from IBM and DOE Labs) - Learn More. Please contact us if you are not a customer but would like to attend.

HPSS @ MSST 2020 - POSTPONED
The 36th International Conference on Massive Storage Systems and Technology will be in Santa Clara, California sometime in October 2020. The increased-awareness of COVID-19 has caused the planners to slip the scheduled event from May 2020 to October 2020 - Learn More. Please contact us if you would like to meet with us in Santa Clara.

HPSS @ SC20
The 2020 international conference for high performance computing, networking, storage and analysis will be in Atlanta, Georgia from November 16th through 19th, 2020 - Learn More. Come visit the HPSS folks at the IBM booth and contact us if you would like to meet with the IBM business and technical leaders of HPSS in Atlanta.

HPSS @ STS 2021
The 3nd Annual Storage Technology Showcase is in the planning stage, but HPSS expects to support the event in March of 2021. Checkout their web site - Learn More. We expect an update later in 2020.

HPSS @ ISC21
The 2021 international conference for high performance computing, networking, and storage will be in Frankfurt, Germany from June 27st through July 1st, 2021 - Learn More. Come visit the HPSS folks at the IBM booth and contact us if you would like to schedule a face-to-face meeting with us in Frankfurt.

What's New?
HUF 2020 - The HPSS User Forum will be hosted virtually at no cost in October 2020.

HPSS 8.3 Release - HPSS 8.3 was released on March 31st, 2020 and introduces a new features.

HPSS 8.2 Release - HPSS 8.2 was released on December 6th, 2019 and introduces a few new features.

New Globus DSI - Version 2.9 of the HPSS DSI is now available from the GitHub release page. It provides the capability to resume interrupted Globus transfers.

Lots Of Data - In November 2019 IBM/HPSS delivered a system to a customer in Canada and demonstrated a sustained tape ingest rate of 11,574 MB/sec (1 PB/day peak tape ingest) while simultaneously demonstrating a sustained tape recall rate of 8,832 MB/sec (791 TB/day peak tape recall). HPSS pushed four 13-frame IBM TS4500 tape libraries (scheduled to house over 500 PB of tape media) to 2,168 mounts/hour.

HPSS 8.1 Release - HPSS 8.1 was released on October 1st, 2019 and introduces a few new features.

July 2019 - Argonne Team Breaks Record for Globus Data Movement from the Summit supercomputer at Oak Ridge National Laboratory to HPSS tape.

Capacity Leader - ECMWF (European Center for Medium-Range Weather Forecasts) has a single HPSS namespace with 479 PB spanning 331 million files.

File-Count Leader - LLNL (Lawrence Livermore National Laboratory) has a single HPSS namespace with 57 PB spanning 1.424 billion files.

Explosive data growth - HPSS Collaboration leadership from Lawrence Berkeley National Laboratory's National Energy Research Scientific Computing Center (NERSC) helped author the "NERSC Storage 2020" report, and NERSC trusts HPSS to meet their immediate and long term data storage challenges.

Older News - Want to read more?
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