Seq Wr, Seq Rd, Rand Wr, Rand Rd

* Seq Wr:

** 自已產生的數位資料:例如錄音、錄影

** 從外界得到的數位資料:(1) USB3:  5Gbps = 640MB/s, 目前只看到在PC上 (tablet?)

(2) USB2: 480Mbps = 60MB/s, PC, tablet, smartphone

(3) Gbe: 1Gbps = 1,000,000,000 bits per second = 116MB/s, PC (tablet?)

(4) 802.11n = 600 Mbits/s 略高於USB 2, PC, tablet, smartphone

* Seq Rd:

** 已經儲存在 local storage 的資料, 以SSD (mainly PC) 來說,取決於SATA III or PCIe (看有幾個lane)

但也要看,例如:影片, bitrate 是多少

若是mSATA, 取決於SATA III?

若是smart phone/tablet 則要看它的platform bandwidth

* Rand Rd:

** 這方面, SSD 的演算法還沒有到極致,裝置還沒有填滿需求

* Rand Wr:

** 最常見是檔案操作

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