GLYPH<SM590000> Updated the following examples: Example 7-57 on page 162, Example 7-59 on page 163, Example 7-60 on page 165, Example 7-61 on page 168, Example 7-63 on page 170, Example 8-7 on page 236, Example 8-8 on page 236, Example 8-9 on page 237, Example 8-21 on page 249. 

## 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: 

GLYPH<SM590000> Added new write failure state, Write Fenced 

GLYPH<SM590000> Added new pool remove option, -E  for removing tapes with no file references 

GLYPH<SM590000> Increased stability and performance 

GLYPH<SM590000> Improved export/import 

GLYPH<SM590000> Improved reconcile 

GLYPH<SM590000> Automated the recover process of write failure tapes 

GLYPH<SM590000> Added improved method for recovering read failure tapes 

## Changed information 

The following information was changed from the previous edition: 

GLYPH<SM590000> Added performance section 

GLYPH<SM590000> Renamed “Recovering data from a write-failure tape” to 7.16, “Handling of write-failure tapes” on page 189 

GLYPH<SM590000> Updated the ltfsee recover command in 11.1, “Command-line reference” on page 300 

GLYPH<SM590000> Added section about recovering data from write failure tapes 

GLYPH<SM590000> Added section about recovering data from read failure tapes 

GLYPH<SM590000> Added section for handling Normal Export errors 

GLYPH<SM590000> Added “boost-filesystem” to system requirements 

GLYPH<SM590000> Added section about memory considerations on the IBM Spectrum Scale file system for increased performance 

## August 2016, Second Edition Version 1.2.1 

GLYPH<SM590000> Added new information about how migrations are handled 

GLYPH<SM590000> Added section about handling read failure tapes 

GLYPH<SM590000> Added new rule for adding tapes into pools 

GLYPH<SM590000> Added table about valid commands on different tape status 

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: 

