The LDIR supports statefull failover.
We use it for tn3270 . e.g., if you have long
lasting connections, then statefull failover
is a good feature. It also comes in handy when
upgrading an LDIR-pair. The CSS, currently, does
not support statefull failover.
For short-running tcp connections, this is not
important.
Another point - the LDIR can be upgraded in
3 minutes. It takes somewhat longer with a CSS.
Besides this, I am all for the CSS. Good box in
many other areas.
/Johnny