Microsoft Prefers Tape for Azure Archival Storage Tier

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‘Tape is the new tape,’ says Azure CTO – for now
After evaluating various technologies including Blu-ray and magnetic disk, Microsoft came to the conclusion that tape was still the way to go for Azure’s archival storage tier, said Microsoft Azure CTO Mark Russinovich.
“We believe tape is the new tape,” so the company builds automated tape libraries with up to 72 tape drives and 12,000 tape cartridges, plus one to two robotic arms to load the required cartridges.