Disk array device

Abstract

PURPOSE: To provide a command processor which can shorten a total seek time in disk writing and reading operation and also shorten the execution process of a next read command in one process. CONSTITUTION: The disk array device has plural magnetic disk devices 14, a host device 11 which reads and writes data on and out of the magnetic disk devices 14, and a disk array controller 13 which is provided between the magnetic disk devices 14 and host device 11 and performs control so that the magnetic disk devices 14 are accessed at the same time. The disk array controller 13 is the command processor which performs physical address conversion so that successive logical addresses are arranged on the same track of each of the magnetic disk devices 14 and performs control so that the same tracks of the accessed magnetic disk devices 14 are sought at all times. Further, buffers are connected to the magnetic disk devices and preread data can be stored in the buffers. COPYRIGHT: (C)1992,JPO&Japio

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    JP-2008016175-AJanuary 24, 2008Seagate Technology Llc, シーゲイト テクノロジー エルエルシー方向性および浮動ライトバンドを有するコマンドキュー順序付け