Artur on SSD's
summary
SSDs replace spindles and cut real tasks to minutes not hours: a file server ingests 8 million files in 9 minutes with a full backup in 12 minutes and sustains 2.2 GB/s of random writes. One modern SSD delivers about 44,000 IOPS vs 180 IOPS for a disk, so you can fit tens of terabytes in one $80k box and avoid sharding until you exceed ~50 TB. Recommendation: use mainstream Intel 320 class drives, skip enterprise SLC unless you have a specific write endurance need.
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