There'll be a near-line HDD array. This is for the recent content and content they profile as being common-access.
Then there'll be a robotic tape library. Any restore request will go in a queue annd when an arm-tapedrive becomes free they'll seek to the data and read it into the HDD array.
Waiting for a slot with the robot arm - tape drive is what will take 4 hours.
There'll be a near-line HDD array. This is for the recent content and content they profile as being common-access.
Then there'll be a robotic tape library. Any restore request will go in a queue annd when an arm-tapedrive becomes free they'll seek to the data and read it into the HDD array.
Waiting for a slot with the robot arm - tape drive is what will take 4 hours.
EMC(kinda), Fujitsu etc make these.
http://en.wikipedia.org/wiki/Tape_library
http://www.theregister.co.uk/2012/06/26/emc_tape_sucks_no_mo...