Dell POWEREDGE M1000E - Manual (Page 655)

Fabric OS Command Reference 623
53-1001764-02
portCfg
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by hosts (channels) attached at the opposite side. Too small of a value
will result in poor performance. The value should be chosen based upon
the typical tape channel program that requires optimum performance.
The default value is 32. The range is 1 to 100.
--
max-read-devs value
Defines the maximum number of concurrent emulated tape read
operations. As concurrency increases, the value of emulation decreases.
Excessive concurrency has the potential to oversubscribe packet data
memory. The setting has significance only for host (channel) initiated
operations at this side and will not affect tape read operations initiated
by hosts (channels) attached at the opposite side. The default value is
16. The range is 1 to 32.
--
max-write-devs value
Defines the maximum number of concurrent emulated tape write
operations. As concurrency increases, the value of emulation decreases.
Excessive concurrency has the potential to oversubscribe packet data
memory. The setting has significance only for host (channel) initiated
operations at this side and will not affect tape write operations initiated
by hosts (channels) attached The default value is 16. The range is 1 to
32.
--
write-timer value
Defines a time limit for pipelined write chains. This value is specified in
milliseconds (ms). If a pipelined write chain takes longer than this value
to complete, the ending status for the next write chain will be withheld
from the channel. This limits processing to what the network and device
can support. Too small a value limits pipelining performance. Too large a
value results in too much data being accepted for one device on a path.
The default value is 300 milliseconds (ms). The range is 100 to 1500.
--
write-chain value
Defines the maximum amount of data that can be contained in a single
CCW chain. If this value is exceeded, emulation is suspended. The
default value is 3 MB (3000000 bytes) The range is 1 MB to 5 MB.
--
oxid-base value
Defines the base value of an entry pool of 256 OXIDs supplied to
emulation-generated exchanges. It should fall outside the range used by
FICON channels and devices to avoid conflicts. The default value is
0x8000. The range is 0x0000 to 0xF000. Note that the default value has
changed, and you no longer need to change the default value for any
configuration.
--
ficon-debug value
Defines optional debug flags. The default value is 0xF7C80000. This
parameter is primarily for use by technical support personnel.
Optional FCIP circuit arguments for fciptunnel create and modify include the following.
-a |--admin-status [0|1]
Enables (1) or disables (0) the circuit. Admin status is by default
disabled. Use -a |--admin-status to enable the feature when creating a
circuit. Use -a |--admin-status 0|1 when modifying a circuit.