User guide

On S2A 9900, use the “user” and/or “zoning” directOS commands to achieve a port zoning

configuration which provides access to the LUN from ports of both controllers. In the zoning

example below, all four LUNs are presented on all 8 ports. Highlighted in yellow are the internal

LUNs owned by the respective controllers, illustrating which S2A 9900 host ports will provide

preferred access to each LUN.

LUN Zoning

Port World Wide Name (External LUN, Internal LUN)

---------------------------------------------------------------------------

1 21000001FF0207EE 000,001 001,002 002,003 003,004

2 22000001FF0207EE 000,001 001,002 002,003 003,004

3 23000001FF0207EE 000,001 001,002 002,003 003,004

4 24000001FF0207EE 000,001 001,002 002,003 003,004

LUN Zoning

Port World Wide Name (External LUN, Internal LUN)

---------------------------------------------------------------------------

1 25000001FF0207EE 000,001 001,002 002,003 003,004

2 26000001FF0207EE 000,001 001,002 002,003 003,004

3 27000001FF0207EE 000,001 001,002 002,003 003,004

4 28000001FF0207EE 000,001 001,002 002,003 003,004

4.1.1 LUN PRESENTATION PROCESS ON S2A 6620 AND SFA 10000

S2A 6620’s architecture includes two controllers with one RAID Processor on each S2A 6620

controller. The architecture is asymmetrical active/active – the preferred home controller,

which owns the VDs storage pool, performs all I/O to a VD storage pool member disks.

Host I/O performed on the host channel of the non-preferred controller are forwarded to the

VDs home controller, which processes the disk operations and returns data to the peer

controller via the inter-controller link connecting the two controllers.