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David. said...

Winston, the answer to your questions is in the post:

"It has 12 Blu-ray drives for an entire rack of cartridges holding 10,000 100TB Blu-ray disks managed by a robot. When the robot loads a group of 12 fresh Blu-ray disks into the drives, the appropriate amount of data to fill them is read from the currently active hard disk group and written to them. This scheduling of the writes allows for effective use of the limited write capacity of the Blu-ray drives."

The goal is write bandwidth.

Feb 12, 2015, 11:12:15 AM

Posted to More on Facebook's "Cold Storage"