DELL MD3220 사용자 설명서

Configuration: About Your Host

3 If the host context agent is running, click Action Stop, then wait

approximately 5 seconds.

4 Click Action Start.

I/O Data Path Protection

You can have multiple host-to-array connections for a host. Ensure that you

select all the connections to the array when configuring host access to the

storage array.

NOTE:

See the Deployment Guide for more information on cabling configurations.

NOTE:

For maximum redundancy, you must select all host connections to the array

when manually defining host topology. For example, a host might have two host

connections listed when manually configuring host access. For this host, you would

select the two host connections listed in the Available hosts section and add them

to the Selected hosts section using the Add button.

NOTE:

For more information on configuring hosts see "Configuration: About Your

If a component such as a RAID controller module or a cable fails, or an error

occurs on the data path to the preferred RAID controller module, virtual disk

ownership is moved to the alternate non preferred RAID controller module

for processing. This feature is called failover.
Drivers for multi-path frameworks such as Microsoft Multi-Path IO (MPIO)

and Linux Device Mapper (DM) are installed on host systems that access the

storage array and provide I/O path failover.
For more information on Linux DM please see "Configuration: Device

please see microsoft.com.

NOTE:

You should have the multi-path driver installed on the hosts at all times,

even in a configuration where there is only one path to the storage system, such as

a single port cluster configuration.

During a failover, the virtual disk transfer is logged as a critical event, and an

alert notification is sent automatically if you have configured alert

destinations for the storage array.

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