1 year old from inktomi steelehead appliance 5-100 times speed size of cache (disk) 40 115 240 512 limited bandwidth - segment cloning fragement - shrink - store app & protocol idependent high latency - transaction prediction learn it - predict it app & protocol specific windows & CIFS Serial ATA Can use SAN disks for the large .5TB app firewall ports open holes for ports or use arbitrary ports ================================================================================ cache compression app acceleration only by TCP session (not other protocols) pass thru for VoIP, SSL, UDP, etc 1-unaccelerated (VoIP) < 1ms 2-unbladed (HTML) < 5ms 3-bladed [s/w license key] (exchange, cifs) ================================================================================