High Performance Storage System

HPSS Logo
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.

< Home

Come meet with us!
2022 HUF
The 2022 HPSS User Forum (HUF) will be an in-person event scheduled October 24-28, 2022, in Houston, TX. Please check back for registration details. This will be a great opportunity to hear from HPSS users, collaboration developers, testers, support folks and leadership (from IBM and DOE Labs). Please contact us if you are not a customer but would like to attend.

HPSS @ SC22
The 2022 international conference for high performance computing, networking, storage and analysis will be in Dallas, TX from November 14th through 17th, 2022 - Learn More. As we have each year (pre-pandemic), we are scheduling and meeting with customers via IBM Single Client Briefings. Please contact your local IBM client executive or contact us to schedule a HPSS Single Client Briefing to meet with the IBM business and technical leaders of HPSS.

HPSS @ STS 2023
The 4th Annual Storage Technology Showcase has been postponed, but HPSS expects to support the event when it returns. Check out their web site - Learn More.

HPSS @ MSST 2023
The 37th International Conference on Massive Storage Systems and Technology will be in Santa Clara, California in May of 2023 - Learn More. Please contact us if you would like to meet with the IBM business and technical leaders of HPSS at Santa Clara University.

HPSS @ ISC 2023
ISC 2023 is the event for high performance computing, machine learning, and data analytics, and will be in Hamburg, Germany from May 21st through May 25th, 2023 - Learn More. As we have done each year (pre-pandemic), we are scheduling and meeting with folks attending the conference. Please contact us meet with the IBM business and technical leaders of HPSS.

What's New?
Celebrating 30 Years - 2022 marks the 30th anniversary of the High Performance Storage System (HPSS) Collaboration.

HPSS 10.1 Release - HPSS 10.1 was released on September 30th, 2022 and introduces fourteen new features and numerous minor updates.

Lots of Data - In March 2022, IBM/HPSS delivered a storage solution to a customer in Canada, and demonstrated a sustained tape ingest rate of 33 GB/sec (2.86 PB/day peak tape ingest x 2 for dual copy), while simultaneously demonstrating a sustained tape recall rate of 24 GB/sec (2.0 PB/day peak tape recall). HPSS pushed six 18-frame IBM TS4500 tape libraries (scheduled to house over 1.6 Exabytes of tape media) to over 3,000 mounts/hour.

HPSS 9.3 Release - HPSS 9.3 was released on December 14th, 2021 and introduces eight new features and numerous minor updates.

HUF 2021 - The HPSS User Forum was hosted virtually at no cost in October 2021.

DOE Announces HPSS Milestone - Todd Heer, Deputy Program Lead, Advanced Simulation and Computing (ASC) Facilities, Operations, and User Support (FOUS), announced that DOE High Performance Storage Systems (HPSS) eclipse one exabyte in stored data.

Atos Press Release - Atos boosts Météo-France’s data storage capacity to over 1 exabyte in 2025 to improve numerical modeling and climate predictions. Want to read more?

HPSS 9.2 Release - HPSS 9.2 was released on May 11th, 2021 and introduces eight new features and numerous minor updates.

Capacity Leader - ECMWF (European Center for Medium-Range Weather Forecasts) has a single HPSS namespace with over 712 PB spanning over 474 million files.

File-Count Leader - LLNL (Lawrence Livermore National Laboratory) has a single HPSS namespace with over 75 PB spanning 1.685 billion files.

Older News - Want to read more?
  • LLNL"
  • LANL"
  • NERSC"
  • ORNL"
  • Sandia"
  • IBM"
  • ANL"
  • Boeing"
  • BNL"
  • CEA"
  • CNES"
  • DWD"
  • DKRZ"
  • ECMWF"
  • PNNL
  • HLRS"
  • IU"
  • IITM"
  • IN2P3"
  • JAXA"
  • KEK"
  • KIT"
  • Met
  • MPCDF"
  • Meteo
  • NASA
  • NASA
  • NCMRWF"
  • NOAA
  • NOAA
  • NOAA
  • NOAA
  • Purdue"
  • SciNet"
  • SSC"
  • SLAC"
  • UTAS"
Home    |    About HPSS    |    Services    |    Contact us
Copyright 1992 - 2021, HPSS Collaboration. All Rights Reserved.