Update default.conf

Also mention using better (but slower) compression
for the ReaR recovery system as another generic method.

usr/share/rear/conf/default.conf

@@ -2406,7 +2406,7 @@ COPY_AS_IS_TSM=( /etc/adsm
 #                  /opt/tivoli/tsm/client/api/bin64/libdmapi.so
 #                  /opt/tivoli/tsm/client/ba/bin/EN_US/dsmclientV3.cat
 #                  /usr/local/ibm/gsk8* )
-# This example is from 2017 so it needs to be adapted to newer TSM versions,
+# This example is dated 2017 so it needs to be adapted to newer TSM versions,
 # cf. https://github.com/rear/rear/pull/1566
 # Additionally you need to add your custom configuration files like Includes and Excludes files.
 # An alternative method to reduce the size of the TSM client in ReaR recovery system initrd
@@ -2418,10 +2418,13 @@ COPY_AS_IS_TSM=( /etc/adsm
 # excludes in particular all language files except the EN_US language subdirectory,
 # cf. https://github.com/rear/rear/issues/3189#issuecomment-2079811746
 COPY_AS_IS_EXCLUDE_TSM=( )
-# To further reduce the size of the ReaR recovery system initrd in particular on POWER architecture
-# kernel modules that are not required to run the ReaR recovery system on replacement hardware or VM
-# are not needed in the ReaR recovery system initrd so MODULES=( 'loaded_modules' ) could be used,
-# see the MODULES description above.
+# Generic methods to reduce the size of the ReaR recovery system initrd in particular on POWER architecture:
+# Kernel modules that are not required to run the ReaR recovery system on replacement hardware or VM
+# are not needed in the ReaR recovery system initrd so on fully compatible replacement hardware
+# MODULES=( 'loaded_modules' ) could be used, see the MODULES description above.
+# Better (but slower) compression for the ReaR recovery system initrd like
+# REAR_INITRD_COMPRESSION="lzma" could be used, see REAR_INITRD_COMPRESSION above,
+# cf. https://github.com/rear/rear/issues/3189#issuecomment-2079794186
 #
 PROGS_TSM=(dsmc)
 #