Dell Force10 S4810P Configuration Manual page 562

• iSCSI QoS—A user-configured iSCSI class of service (CoS) profile is applied to all iSCSI traffic.
Classifier rules are used to direct the iSCSI data traffic to queues that can be given preferential QoS
treatment over other data passing through the switch. Preferential treatment helps to avoid session
interruptions during times of congestion that would otherwise cause iSCSI packets to be dropped.
• iSCSI DCBX TLVs are supported.
Figure 26-1
switches connect installed servers (iSCSI initiators) to a storage array (iSCSI targets) in a SAN network.
iSCSI optimization running on the master switch is configured to use dot1p priority-queue assignments to
ensure that iSCSI traffic in these sessions receives priority treatment when forwarded on stacked switch
hardware.
Figure 26-1. iSCSI Optimization Example
562
| iSCSI Optimization
shows iSCSI optimization between servers and a storage array in which a stack of three