An anonymous reader writes: Backblaze, the cloud-based backup provider, has revealed how it continues to undercut its competitors: by building its own 135TB Storage Pods which cost just $7,384 in parts. Backblaze has provided almost all of the information that you need to make your own Storage Pod, including 45 3TB hard drives, three PCIe SATA II cards, and nine backplane multipliers, but without Backblaze's proprietary management software you'll probably have to use FreeNAS, or cobble together your own software solution.
Using Storage Pods, Backblaze says it can provide 1 petabyte of storage with rackspace, power, and bandwidth for three years, for just $95,000. Using Dell hardware it would cost $500,000 — and using Amazon S3, 1PB costs $2.5 million.
(A couple of years ago they showed how to make their first-generation, 67TB Storage Pods: http://hardware.slashdot.org/story/09/09/02/138209/Build-Your-Own-28M-Petabyte-Disk-Array-For-117k)