Optimal paths with SCSI I/O referrals

Details Optimal paths with SCSI I/O referrals Optimal paths with SCSI I/O referrals

2009-04-16

2011-11-08

Chen, Alan (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output access regulation

C710S031000, C711S100000, C709S238000

Reexamination Certificate

active

08055815

ABSTRACT:
The present disclosure is directed to a method for communication between an initiator system and a block storage cluster. The method may comprise receiving an initial data request from the initiator system to a first storage system, a portion of the data requested in the initial data request is not stored by the first storage system, but is stored by a second storage system; retrieving the portion of the data that is stored by the second storage system; forwarding the portion of the data to the initiator system; and transmitting a referral list comprising at least one referral from the first storage system to the initiator system, wherein the initiator system is configured for maintaining a referral cache based on the referral list, and a subsequent data request initiated by the initiator system is directed to the block storage cluster based on the referral cache.

REFERENCES:
patent: 2007/0244908 (2007-10-01), Rajan
patent: 2008/0244174 (2008-10-01), Abouelwafa et al.

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