How long can digests last?

• Filters require 0.5% of link capacity

  • Four OC-3s require 47MB per minute
  • A single drive can store a whole day

• Access times are equally important

  • Current drives can write >3GB per minute
  • OC-192 needs SRAM access times

• Still viable tomorrow

  • 128 OC-192 links need <100GB per minute

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