Disk array system and method for migrating from one storage...

Details Disk array system and method for migrating from one storage... Disk array system and method for migrating from one storage...

2007-09-11

2007-09-11

Peikari, B. James (Department: 2189)

Electrical computers and digital data processing systems: input/

Input/output data processing

C711S152000, C711S165000, C711S001000, C711S005000, C710S002000, C710S003000, C710S104000

Reexamination Certificate

active

11513553

ABSTRACT:
A method for migrating from a source storage system to a target storage system includes defining a volume defined on a device to be migrated in the source storage system as an external volume to the target storage system; causing the host to access the volume on the drive to be migrated through an input/output port of the drive to be migrated as the external volume of the target storage system; blocking the other input/output port of the drive to be migrated while maintaining the access to the external volume of the target storage system; reconnecting the blocked input/output port with an interface in the target storage system; blocking the input/output port through which the external volume is being accessed, and connecting it with the interface in the target storage system; and implementing the drive to be migrated in the target storage system. Data is migrated from the source storage system to the target storage system on a drive basis while receiving read/write requests for the data from the host computer and continuously using some of the source storage system.

REFERENCES:
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patent: 2002/0188768 (2002-12-01), Hirakawa et al.
patent: 2005/0193180 (2005-09-01), Fujibayashi
patent: 2005/0216591 (2005-09-01), Sato

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