Optimizing Iscsi; Configuring Iscsi Global Parameters - Dell PowerConnect 5424 User Manual

Viewing RAM Log Entries Counter Using the CLI Commands
The following table summarizes the equivalent CLI commands for setting fields displayed in the
General Settings page.
Table 6-51. General Settings CLI Commands
CLI Command
logging buffered size number Sets the number of syslog messages stored in the internal buffer (RAM).
port jumbo-frame
show port jumbo-frame
The following is an example of the CLI commands:
Console (config)# logging buffered size 300

Optimizing iSCSI

iSCSI is a communication protocol used for sending data between file servers and storage disks. The file
servers are called initiators and the disks are called targets. You can optimize iSCSI flow by setting
Quality of Service frame priority parameters in the device. The device can also intercept iSCSI frames
and provide information about iSCSI communications (called sessions).

Configuring iSCSI Global Parameters

The iSCSI Optimization Global Parameters page includes parameters that affect how the device
handles iSCSI frames.
iSCSI can be configured for QoS. In the iSCSI Optimization Global Parameters page, you must enable
iSCSI, set its classification to CoS or DSCP . You may also enable Remark to change the DSCP or Cos
user priority field in the packet. In the QoS pages, you can then set the queueing to strict priority or
WRR, and then map the CoS or DSCP to the desired queue. You set the queueing in the Qos Queue
Settings page, and you map to queues in the QoS CoS to Queue or DSCP to Queue pages.
Be careful when setting QoS parameters. For example, if you set the queueing to WRR and set a low
weight, iSCSI traffic will be dropped whenever there is an overload.
To open the iSCSI Optimization Global Parameters page, click System
Parameters in the tree view.
232
Configuring System Information
Description
Enables jumbo frames for the device.
Displays jumbo frame information for the device.
→
iSCSI Optimization
→
Global