README: Add recommended TSM client version

Add info on recommended TSM client version due to 796a02a and IBM APAR IT33143.
neicnordic · Aug 13, 2020 · cf7909c · cf7909c
1 parent 4ad7088
commit cf7909c
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diff --git a/README.md b/README.md
@@ -9,6 +9,9 @@ data and then use batch processes to archive and restore data to/from tape.
 
 ENDIT is comprised of an ENDIT dCache plugin and the ENDIT daemons.
 
+The IBM Spectrum Protect (TSM) client is used to perform the actual transfer
+of files to/from the tape system.
+
 # Requirements
 
 The ENDIT daemons are known to work on Perl 5.10 onwards.
@@ -18,6 +21,10 @@ At least the following Perl modules need to be installed:
 * JSON
 * JSON::XS (highly recommended, approx 100 times faster parsing compared to pure-perl JSON)
 
+A recent version of the IBM Spectrum Protect (TSM) client is recommended, as of this writing
+v8.1.11 due to [commit 796a02a](https://github.com/neicnordic/endit/commit/796a02a8996f0bc7934721c053f43e0543affedc)
+and [IBM APAR IT33143](https://www.ibm.com/support/pages/apar/IT33143).
+
 # Installation and Configuration
 
 All dCache tape pools needs both the ENDIT dCache plugin and the ENDIT daemons