Electrical computers and digital processing systems: memory – Addressing combined with specific memory configuration or... – Dynamic-type storage device
Reexamination Certificate
2008-03-28
2010-06-22
Thai, Tuan V. (Department: 2185)
Electrical computers and digital processing systems: memory
Addressing combined with specific memory configuration or...
Dynamic-type storage device
C711S100000, C711S170000, C711S202000, C711S203000
Reexamination Certificate
active
07743201
ABSTRACT:
A method to assign addresses to a plurality of data storage devices, by providing a switch and (N) data storage devices, where each of those (N) data storage devices is interconnected with said switch. The method further establishes (M) arbitrated loop physical addresses (“AL_PAs”), where (M) is less than (N), and assigns a different one of each of the (M) AL_PAs to a different one of the (N) data storage devices, such that the (N) data storage devices comprise (M) AL_PA-assigned data storage devices and (P) non-address-assigned data storage devices. The method then detects a failure of an (i)th AL_PA-assigned data storage device, and transfers the (i)th AL_PA from the failed address-assigned data storage device to a (j)th data storage device, where that (j)th data storage device comprises one of the (P) previously non-addressed data storage devices.
REFERENCES:
patent: 4527251 (1985-07-01), Nibby et al.
patent: 6195349 (2001-02-01), Hiscock et al.
patent: 6954784 (2005-10-01), Aiken et al.
patent: 7593346 (2009-09-01), McLaggan et al.
Elliott John C.
Islam Shah Mohammad Rezaul
Kubo Robert A.
Lucas Gregg S.
International Business Machines - Corporation
Quarles & Brady LLP
Regelman Dale F.
Thai Tuan V.
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