The Solid State Storage Revolution
summary
Flash replaces spindles with semiconductor modules and claims about real hardware: a four‑channel controller yields ~40,000 read IOPS and a flash DIMM measures >30,000 IOPS, 80 DIMMs in one box reach 1,000,000 IOPS per box, and aggregate throughput scales with more channels. Cost per GB falls from hundreds to under a few dollars and headed below $1. Write endurance for single‑level flash approaches ~1,000,000 cycles (roughly five years at 50 MB/s), controllers use a supercapacitor-backed DRAM buffer to hide slow erases and an expected 100x speedup vs disk on IOPS.
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chapters (23)
- 0:00Intro
- 0:36besides ever faster CPUs
- 1:013 Things Driving the Server Business
- 1:11A Quick History of the Hard Disk
- 2:09Hard Disk $/GB Cost Evolution
- 2:21IOPS Per Hard Disk
- 2:33Hard Disk Evolution 1998-2008
- 2:47Flash Memory History
- 3:35A Flash Chip Package
- 4:39SLC and MLC Flash
- 5:14Flash Reliability
- 5:39Typical Flash Memory Controller
- 6:02Flash Form Factors
- 6:372.5" HDD vs 2.5" SSD
- 6:47Sun Flash DIMM
- 6:57Sun Flash Array 5100
- 7:26Flash vs Disk Summary
- 7:54Flash vs DRAM Comparison (2009)
- 8:32DRAM vs Flash Price Projection
- 8:49DRAM vs SLC Flash per System
- 9:10DRAM vs SLC Flash (Log Scale)
- 9:42Solid State Memory Summary
- 12:36NAND Flash Performance
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