Quality of service for iscsi

Details Quality of service for iscsi Quality of service for iscsi

H - Electricity

04

L

H04L 29/06 (2006.01) H04L 12/00 (2006.01) H04L 29/08 (2006.01)

Patent

CA 2511083

A system adapted to provide quality of service (QoS) for an iSCSI environment including one or more initiators and one or more targets. Each initiator includes an iSCSI initiator and a TCP layer. The iSCSI initiator includes a QoS shaper for shaping one or more iSCSI PDUs according to QoS policies. The TCP layer includes a QoS marker for marking the PDUs according to the QoS policies. The target includes a first and second QoS component. The first QoS component is in an iSCSI target and handles I/O resources. The first QoS component shapes read commands and write commands according to QoS policies. The second QoS component is in a TCP layer and handles network resources. iSCSI PDUs are shaped and marked according to QoS policies of iSCSI. The QoS policies used by the initiators and targets include policies for network resources and policies for I/O resources.

L'invention concerne un système conçu pour fournir une qualité de service (QoS) pour un environnement iSCSI comprenant un ou plusieurs initiateurs et une ou plusieurs cibles. Chaque initiateur comprend un initiateur iSCSI et une couche TCP. L'initiateur iSCSI comprend un dispositif de formation QoS destiné à former des PDU iSCSI selon des polices de QoS. La couche TCP comprend un marqueur QoS destiné à marquer la PDU selon les polices de QoS. La cible comprend un premier et un second composant de QoS. Le premier composant QoS est placé dans une cible iSCSI et indique les ressources entrée/sortie. Le premier composant QoS forme des commandes de lecture et rédige des commandes selon les polices QoS. Le second composant QoS est placé dans la couche TCP et indique les ressources de réseau. Les PDU iSCSI sont formées et marquées selon les polices QoS de iSCSI. Lesdites polices QoS utilisées par les initiateurs et les cibles comprennent les polices pour les ressources réseau et les polices pour les ressources entrée/sortie.

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