Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Patent
1997-05-07
2000-04-04
Thai, Tuan V.
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
711 4, 711112, 711114, G06F 1200, G06F 1300
Patent
active
060473533
ABSTRACT:
A method of providing synchronized operational information for a host computer and an attached storage system is provided. The method includes providing a trace buffer in a memory of the storage system. A special command is created which allows a host computer to write information to the provided trace buffer. The special command uses a command from the communication protocol command set is a specific way in order to effectuate the trace buffer entry. The trace buffer entry will have a time component based on the storage system time clock. Thus, host activity may be synchronized in time with the storage system activity. In addition to the trace buffer, a statistics table is provided which maintains a log of which applications programs running on specific hosts, accessed the devices of the storage system.
REFERENCES:
patent: 5089958 (1992-02-01), Horton et al.
patent: 5133060 (1992-07-01), Weber et al.
patent: 5619644 (1997-04-01), Crockett et al.
patent: 5848229 (1992-10-01), Morita
Ofer Erez
Shadmon David
Shagam Eli
Vishlitzky Natan
EMC Corporation
Gunther John M.
Gupta Krishnendu
Thai Tuan V.
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