Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

The procedure to set up a diskless R21 device is the same as any other type of R21 device.

In order to add the diskless device, it must already be an RDF1+DLDEV or an RDF2+DLDEV device:

Use the symconfigure command to add the R21 mirrors.

Perform the add rdf mirror command twice; once for each site.

Syntax

Use the symconfigure add rdf mirror command to add both static and dynamic SRDF mirrors to diskless devices.

Restrictions

• Either the local or the remote device can be diskless, however, both the local and the remote SRDF device cannot be diskless.
• Diskless devices can only be configured on a fibre or GigE SRDF directors.
• Cannot add a mix of diskless and non-diskless SRDF devices to an SRDF group with devices in Async mode.
• The create pair action is blocked if it results in an R1->R21->R2 relationship where the R1 and the R2 are diskless devices.
• When configuring a diskless device the modes should be set as per rules discussed in Control and set restrictions for diskless devices in cascaded SRDF.

Examples

To add the specified device from site A:

add rdf mirror to dev 01A
  ra_group=67, mirror_type=RDF1
  remote_dev=140
...

To add the specified device from site C:

add rdf mirror to dev 04F
  ra_group=67, mirror_type=RDF2
  remote_dev=140