I use, and am happy with, a Lightwave Console server 3200. It does have scrollback. See http://www.lightwavecom.com (yes, two coms)
I've used the lightwaves before and really liked them, esp the scrollback buffer on the per-port basis. They could be more dense though, or more easily rackmountable. I have to admit it's been years since I used them though.
Brian> Has anyone looked at the CS9000 from Perle? 1U rackmount, 24 Brian> RJ-45 ports, does not cause a break signal to be sent when Brian> power cycled.
Brian> http://www.perle.com/products/prod_family/console_server/cs9000.html
I just went and looked at it and I'm not that impressed with the security features, nor with the lack of any mentioned scrollback serial buffer. That's a key thing to me.
The other people who have mentioned getting a cyclades of Moxa serial port card have a good tack, esp if you get the conserver software package as well to manage ports, etc. More do it yourself, but I'm sure someone will start to sell some bundled setups in the future.
John John Stoffel - Senior Unix Systems Administrator - Lucent Technologies stoffel@lucent.com - http://www.lucent.com - 978-952-7548