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IBM System z9 : ウィキペディア英語版
IBM System z9



IBM System z9 is a line of IBM mainframe computers. The first models were available on September 16, 2005. The System z9 also marks the end of the previously used eServer zSeries naming convention. It was also the last mainframe computer that NASA ever used.〔(【引用サイトリンク】 The End of the Mainframe Era at NASA )
== Background ==
System z9 is a mainframe using the z/Architecture, previously known as ESAME. z/Architecture is a 64-bit architecture which replaces the previous 31-bit-addressing/32-bit-data ESA/390 architecture while remaining completely compatible with it as well as the older 24-bit-addressing/32-bit-data System/360 architecture. The primary advantage of this arrangement is that intensive applications like DB2 are no longer bounded by 31-bit memory restrictions while older applications can run without modifications.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「IBM System z9」の詳細全文を読む



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