Questions about Time Capsule

Part of the Mac­world 2008 Keynote post-mortem. Time Cap­sule is Apple’s wire­less hub + back­up dri­ve all-in-one prod­uct. It pro­vides fast wire­less net­work­ing: 802.11n. It pro­vides a large, “serv­er-grade” hard dri­ve, acces­si­ble wire­less­ly. (By “serv­er-grade” they seem to mean 7200 rpm, SATA.) You can use this hard dri­ve to make Time Machine back­ups from all your Macs (yes, more than one can back­up to the same dri­ve, wire­less­ly). It also pro­vides a USB port for anoth­er device (a hard dri­ve, a print­er, or a USB hub) to be shared wire­less­ly.

Time Cap­sule is a big advance­ment from the pre­vi­ous 802.11n base sta­tion for one rea­son, Time Machine (the back­up soft­ware) would not work wire­less­ly before. That’s great, for the inter­nal disk in Time Cap­sule. What I can’t find out, how­ev­er, is whether an exter­nal hard disk attached to Time Cap­sule’s USB port and shared wire­less­ly will be com­pat­i­ble with Time Machine.

That would make all the dif­fer­ence to me.