Summary of changes
This section describes the technical changes that are made in this edition of the book and in previous editions. This edition might also include minor corrections and editorial changes that are not identified.
Summary of Changes
for SG24-8333-04
for IBM Spectrum Archive Enterprise Edition V1.2.5.1: Installation and Configuration Guide
as created or updated on January 11, 2018.
January 2018, Fifth Edition Version 1.2.5.1
New information Version 1.2.5.1
•Provides new tape media support for LTO 8 tape drives with LTO 8 Type M cartridge (M8). The LTO program introduced a new capability with LTO 8 tape drives: the ability to write 9 TB (native) on a brand new LTO Ultrium 7 cartridge instead of 6 TB (native) as specified by the LTO 7 format.
•Added support for Red Hat Enterprise Linux Server 7.4.
New information Version 1.2.5
•Provides support for the new 12 TB LTO 8 tape drive and TS1155 FC tape drive in the TS3500 tape library
•A library replacement procedure has been provided to allow the replacing of an old tape library (for example, TS3500 tape library) with a new tape library (for example, TS4500 tape library)
Changed Information
•Upgraded the HSM component to version 8.1.2
August 2017, Fourth Edition Version 1.2.4
This revision reflects the addition, deletion, or modification of new and changed information, which is summarized below.
New information
•Added support for Active File Management (AFM) Independent Writer (IW) mode starting with IBM Spectrum Archive V1.2.3.0 and later
•Added support for a RESTful API
•Added high availability features:
 – Control node failover
 – Monitoring daemon
 – New start/stop
•Added a GUI dashboard for data monitoring
•Added low pool threshold attribute for pools
•Added support for 15 TB tape support with TS1155 tape drive
•Added new ltfsee node show command
•Added new ltfsee failover command
•Added new IBM Spectrum Archive EE database backup
•Added IBM Swift HLM support
Changed Information
•Added new traps to SNMP
•Updated ltfsee info nodes command
February 2017, Third Edition Version 1.2.2 minor update
This revision reflects the addition, deletion, or modification of new and changed information, which is summarized below.
•Added the following link for the new Performance white paper information in section 3.4.4, “Performance” on page 48.
 
Note: For additional migration performance information see the IBM Spectrum Archive Enterprise Edition V1.2.2 Performance White Paper at:
January 2017, Third Edition Version 1.2.2
This revision reflects the addition, deletion, or modification of new and changed information, which is summarized below.
New information
The following topics are new in Version 1.2.2:
•Added new write failure state, Write Fenced
•Added new pool remove option, -E for removing tapes with no file references
•Increased stability and performance
•Improved export/import
•Improved reconcile
•Automated the recover process of write failure tapes
•Added improved method for recovering read failure tapes
Changed information
The following information was changed from the previous edition:
•Added performance section
•Renamed “Recovering data from a write-failure tape” to 7.16, “Handling of write-failure tapes” on page 191
•Updated the ltfsee recover command in 11.1, “Command-line reference” on page 304
•Added section about recovering data from write failure tapes
•Added section about recovering data from read failure tapes
•Added section for handling Normal Export errors
•Added “boost-filesystem” to system requirements
•Added section about memory considerations on the IBM Spectrum Scale file system for increased performance
•Added new information about how migrations are handled
•Added section about handling read failure tapes
•Added new rule for adding tapes into pools
•Added table about valid commands on different tape status
August 2016, Second Edition Version 1.2.1
This revision reflects the addition, deletion, or modification of new and changed information, which is summarized below.
New information
What’s New in Version 1.2.1:
•Added procedures for upgrading from IBM Spectrum Archive Enterprise Edition version 1.1.x
•Added support for Red Hat Enterprise Linux (RHEL) 6 and Linux Enterprise Server 11
•Added information about avoiding errors during an upgrade on multiple nodes in 4.3.2, “Installing, upgrading, or uninstalling IBM Spectrum Archive EE” on page 64
Changed information
•Removed commands for creating a list of files to use with migration, premigration, and save functions. V1.2.1.x and later now only uses the IBM GPFS™ scan result file.
•Updated the options for the ltfsee_install command.
June 2016, First Edition, Version 1.2
This revision reflects the addition, deletion, or modification of new and changed information, which is summarized below.
New information
What’s New in Version 1.2:
•Multiple tape library attachment (up to two) support to a single IBM Spectrum Scale cluster:
 – Data replication to the pools in separate libraries for additional data resiliency.
 – You can use the read replica policy to specify file recall behavior if there is a failure.
 – Total capacity expansion beyond a single library limit.
 – IBM Spectrum Scale cluster in single site or across metro distance locations through IBM Spectrum Scale synchronous mirroring.
 – Mixed type library support with different drive types.
 – Pools can be configured with a subset of tapes in one tape library as an LTO tape pool, 3592 tape pool, or 3592 write-once, read-many (WORM) tape pool.
•Data recording on WORM tape cartridges:
 – WORM cartridges are great for long-term records retention applications.
 – Support for 3592 WORM cartridges (3592-JY and 3592-JZ tapes).
 – Selection of rewritable or WORM cartridges per tape pool.
 – Files can be migrated (or premigrated) to the specified WORM pool as the destination in the IBM Spectrum Scale policy file or CLI option.
 – Files on WORM tapes will not be overwritten and are not erasable:
 • Reclamation, reconciliation, and reformat operations are disabled.
 • As a preferred practice, set the immutable flag on IBM Spectrum Scale disk to prevent the deletion of stub file for additional data protection.
•Expand storage capacity with LTO7 support:
 – You have 2.4 - 4 times the capacity in the same foot print compared to LTO6 and LTO5 technology.
 – Support for migration of files larger than 2.x TB (up to 6.x TB).
 – Intermixing of LTO generation in single library is supported (the pool must be homogeneous).
•Performance improvement for large-scale systems:
 – Optimization of file migration operations for many small files and for multi-node configuration.
 – Reduced IBM Spectrum Scale file system size requirements for IBM Spectrum Archive EE metadata.
 – Collocation of files within a pool for speedier file recall.
•Flexibility in pool-based data management:
 – Improved automatic recovery process on failure by switching to replica pools.
 – Improved support of tape drive intermix.
January 2015, Third Edition Version 1.1.1.2
This revision reflects the addition, deletion, or modification of new and changed information, which is summarized below.
New information
•Added support for IBM GPFS V4.1
•Added support for IBM TS1150 tape drive and media
•V1.1.1.2 (PGA2.1) updates
Changed information
Added the -u option to the reconcile command to skip the pretest that checks for the necessity to reconcile before mounting the tapes.
November 2014, Second Edition Version 1.1.1.1
This revision reflects the addition, deletion, or modification of new and changed information, which is summarized below:
New information
•Premigration commands
•Added support for IBM TS4500 and TS3310 tape libraries
•Additional OS platform support
•Preserving file system objects on tape
•Recall commands
•Version 1.1.1.0 (PGA1) and Version 1.1.1.1 (PGA2) updates
Changed information
• Improved small file migration performance
• Improved data resiliency (All copies are now referenced.)
 
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