When mail journaling, compression and encryption are in use, there are
cases for which Domino performs unnecessary conversions between LZ1 and
Huffman encoding. The ENABLE_LZ1_ENCRYPTED_NOTES option was introduced
as an experiment. The intention was to avoid unnecessary I/O caused by
the conversions by setting ENABLE_LZ1_ENCRYPTED_NOTES=1. This configuration
has not been adequately tested.
When ENABLE_LZ1_ENCRYPTED_NOTES is absent from notes.ini or set to 0, additional,
unnecessary conversions can sometimes be performed.
ENABLE_LZ1_ENCRYPTED_NOTES should always be disabled. This configuration
has not been thoroughly tested with down level servers and clients.
Caveat: If 1) the entire domain (server and clients) are using 8.5 or higher,
2) journaling is enabled, and 3) LZ1 compression is in use, then ENABLE_LZ1_ENCRYPTED_NOTES=1
on the server side would improve server I/O performance.
The notes.ini option ENABLE_LZ1_ENCRYPTED_NOTES was introduced in 8.0.1.
Its behavior was modified in 8.0.2 for cases involving sealed notes. As
of 8.0.3 and 8.5.1 that behavior stands unchanged until further notice.
Domino Configuration Tuner:
This setting is included in the DCT
catalog of best practices.