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NAND-Flash Type

NAND-Flash Type. Source: SAMSUNG. SLC = Single Level Cell: Highest endurance; Highest performance; Most expensive MLC = Multi Level Cell: Moderate cost; Read intense apps; Web server eMLC = Enterprise MLC: Higher s ecurity at moderate cost; Database apps

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NAND-Flash Type

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  1. NAND-Flash Type Source: SAMSUNG • SLC = Single Level Cell: Highest endurance; Highest performance; Most expensive • MLC = Multi Level Cell: Moderate cost; Read intense apps; Web server • eMLC= Enterprise MLC: Higher security at moderate cost; Database apps • TLC = Triple Level Cell: Low cost; High density; Consumer Electronics

  2. Endurance SSD – Example Server Database Endurance Flash Chips is device related but predictable: SLC: • (1TB*100.000/500MBps) = 6,3 years eMLC • (1TB*30.000/500MBps) ~ 2 years MLC • (1TB*3.000/500 MBps) < 1 year Capacityx Write Capacity Write Bandwidth Source: Kurt Gercke, IBM Storage

  3. SSD in a Server Environment Not Ideal • High transactions • Massive write processes: transaction server, database server OK • Application server Good • System storage • Delivery server: Web-Server, File-Server, Media Server • VM Hosts, Small Business Server > 1000 GB/day Some 100 GB/day < 100 GB/day

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