Dell PowerVault MD3820f User Manual

Page 8

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8

If the iSCSI initiators are connected to MD3800i series through

the network switches, make sure that your switches support

IEEE 802.3x flow control, and the flow control is enabled for

both sending and receiving on all switch ports and server NIC

ports.

If you do not enable the flow control, your iSCSI storage array

may experience the degradation of the I/O performance.

In addition to enabling the Ethernet IEEE 802.3x flow control it
is also recommended to disable unicast broadcast storm
control on the switch ports connected to the iSCSI initiators
and target arrays and turn on the "PortFast" mode of the
spanning tree protocol (STP) on the switch ports connected to
the iSCSI initiators and target arrays.

Note that turning on the "PortFast" mode is different from
turning off the whole operation of STP on the switch. With
"PortFast" on, the STP is still enabled on the switch ports.
Turning STP off may affect the entire network and can leave the
network vulnerable to physical topology loops.

N/A

N/A

For optimal I/O performance, avoid having more than one

iSCSI session originating from one host iSCSI port to the same

controller. Ideally, the iSCSI host NIC should be connected to

only one iSCSI target port on the storage subsystem.

N/A

N/A

For Dell-Oracle Tested and Validated solutions on the MD

arrays, please refer to the following site <

http://en.community.dell.com/techcenter/enterprise-

solutions/w/oracle_solutions/current-release.aspx

>

The number of VD copies limited to a maximum of 511 with a

maximum of 8 concurrent copies (applicable to RAID controller

firmware version 08.10.05.60 or later).

Remote Replication is not supported in Simplex Mode.

N/A

For Fibre Channel and iSCSI controllers, if the SAS host ports are

used, they much be connected to a SAS HBA on a separate host.

N/A

Maximum number of iSCSI sessions

N/A

512 per port

N/A

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