Seagate ST318304FC User Manual download pdf (Page 15)

QuickLoop/Fabric Assist (QLFA)

QuickLoop/Fabric Assist (QLFA) connects private loop hosts to the SAN fabric for better performance

and fault management, while protecting investments in legacy loop devices. Because many legacy

devices are designed for FC-AL configurations, Fabric OS translative mode protects investments by

supporting private loop target devices. The SW12000 running Fabric OS v4.0 currently does not

support QuickLoop or Fabric Assist directly. However, it is possible to connect switches that do support

QuickLoop or Fabric Assist to a SW12000. It is also possible to connect devices that are accessed by

QuickLoop/Fabric Assist devices to the SW12000. This means that any type of ‘target’ device may be

attached to a switch running Fabric OS v4.0 and may be included in a QuickLoop Fabric Assist zone that

has its private host attached to a switch running QuickLoop and Zoning. QuickLoop and Zoning are pre-

requisites for QLFA, on Fabric OS v2.3 or later (SilkWorm 2xxx) or v3.0.1 or later (SilkWorm 3800/3200).

Other Zoning Notables

- LUN Level Zoning is not supported in FOS 4.0 and FOS 3.0, but support is anticipated in FOS 4.1 and

FOS 3.1.

- According to the 12K TOI, the Zoning configuration size limit are:

FOS 4.x 128KB

FOS 3.x 128KB

FOS 2.x 96KB

When operating in a mixed 2xxx and 3xxx/SW12000 environment, the switch with smallest configuration

size will be the limiting factor. So in a mixed Fabric with SW12000 in the core and 2xxx on the edge, the

maximum zoning configuration size will be limited to 96KB.

- There's a new ‘root’ level command called 'cfgsize' which will report the size of the current zoning

configuration. More recent versions of FOS 4.0 including v4.0.0rc5 contain this command.

Sample output follows:

UlyssesSW0:root> cfgsize

Zone DB max size - 131000 bytes

commited - 332

transaction - 0

UlyssesSW0:root> cfgshow

Defined configuration:

cfg: cfg1 port_zone; wwn_zone; mixed_zone

cfg: mycfg myzone

cfg: mycfg2 myzone2

zone: mixed_zone

1,15; 20:00:00:20:37:d8:d6:e5; 20:00:00:20:37:d8:d6:8f

zone: myzone 1,30; 1,31; 1,29

zone: myzone2 1,29; 1,30; 1,31; 1,28

zone: port_zone

1,13; 1,14; 1,15

zone: wwn_zone

20:00:00:e0:8b:04:03:76; 20:00:00:e0:8b:01:98:62;

20:00:00:20:37:d8:d6:e5; 20:00:00:20:37:d8:d6:8f

Effective configuration:

cfg: mycfg2

zone: myzone2 1,29

1,30

1,31

1,28

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Seagate ST318304FC User Manual Page 15

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