How to configure a storage array connecting to a Brocade switch (version 6.3.1 or 6.4) to maintain high access performance under heavy service pressure?

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A storage array exchanges data with a Brocade switch (version 6.3.1 or 6.4) at an 8 Gbit/s rate. When a large file (larger than 50 GB) is being transmitted, an error occurs and interrupts the transmission and no I/O is sent to the storage array. After three hours, an alarm is generated, the related drive letter disappears, and the disk manager fails to be started.
A Brocade switch (version 6.3.1 or 6.4) supports the following modes:
? Mode 0-IDLE/IDLE
? Mode 1-ARBF/ARBF
? Mode 2-IDLE/ARBF
? Mode 3-If ARBF/ARBF fails, use IDLE/ARBF
Mode 1, Mode 2, and Mode 3 comply with the FC-FS-3 protocol. However, the 8 Gbit/s FC host ports on the storage array and the HBA of the host are in FC-AL mode by default and comply with the FC-FS-2 protocol. Therefore, an incompatibility issue arises.
You can use either of the following methods to clear the issue.
? Run the portcfgshow command to check whether the value of Fill Word is 0. If the value is not 0, run the portcfgfillword command to change the value of Fill Word to 0.
? In the ISM navigation tree, expand the Device Info node, and click the Ports node. In the right function pane, set the value of Mode to Fabric. In the POST phase of the HBA, press Ctrl+Q to go to the configuration page, and then set Connection Options of the HBA to Point-to-Point.

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Method used to query the type and version of a Brocade switch
You can query the type and version of a Brocade switch as follows: Brocade Model To obtain the type of a Brocade Fibre Channel switch, run the switchinfo command. The details are as follows: wd77:FID128:admin> switchshow switchName: swd77 switchType: 121.3 switchState: Online switchMode: Native switchRole: Principal switchDomain: 1 switchId: fffc01 switchWwn: 10:00:00:27:f8:12:e1:6c zoning: ON (jlj_zone) switchBeacon: OFF FC Router: OFF Allow XISL Use: OFF LS Attributes: [FID: 128, Base Switch: No, Default Switch: Yes, Address Mode 0 For the switchType parameter, the integral part is the switch type and the decimal part is the layout version of the switch. Version To obtain the version of a Brocade Fibre Channel switch, run the version command. The details are as follows: swd77:admin> version Kernel: 2.6.14.2 Fabric OS: v6.4.1a Made on: Tue Dec 14 02:54:51 2010 Flash: Tue Apr 3 14:10:47 2012 BootProm: 1.0.15 swd77:admin> As shown above, the switch version is v6.4.1a.

Connecting switches to storage nodes for management and maintenance on OceanStor 9000 DeviceManager
To query information and manage switches on OceanStor 9000 DeviceManager, you can add a switch using the following methods: 1. If you are deploying OceanStor 9000 DeviceManager, follow the wizard to enter and select parameters of the switch on DeviceManager. After the deployment is completed, you can query the switch information. 2. On a deployed OceanStor 9000 DeviceManager, you can add or delete switch parameters on Toolkit. DeviceManager allows you only to modify switch parameters. You cannot add or delete switch parameters.

How to configure a switch after the iSCSI host ports on a storage array are bound?
Storage arrays support only the 802.3ad binding mode. The 802.3ad mode is also known as the dynamic link aggregation policy. Under this policy, multiple ports on a network adapter work in the same activated aggregation group and share the same rate and duplex mode. After the iSCSI host ports on a storage array are bound, dynamic link aggregation needs to be configured for the ports on the switch connecting to the storage array. For example, on a switch, ports 19 and 20 are connected to a storage array, and then the method for configuring link aggregation of the dynamic LACP mode is as follows: system-view System View: return to User View with Ctrl+Z. [S-Switch]interface GigabitEthernet 1/0/19 [S-Switch-GigabitEthernet1/0/19]lacp enable LACP is already enabled on the port! [S-Switch-GigabitEthernet1/0/19]quit [S-Switch]interface GigabitEthernet 1/0/20 [S-Switch-GigabitEthernet1/0/20]lacp enable LACP is already enabled on the port! [S-Switch-GigabitEthernet1/0/20]quit NOTE: After the dynamic link aggregation is enabled for some ports on a switch, the switch automatically adds the ports to an aggregation group.

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