Advanced Fc 4Gbps Pci-X Adapter Settings; Fc 4Gbps Pci-X Hba Data Rates - IBM System Storage DS4000 FC Installation And User Manual

FC 4Gbps PCI-X Adapter hard loop ID
Hard loop ID
Spin up delay
Connection Options
Fibre Channel Tape Support
Data Rate

Advanced FC 4Gbps PCI-X Adapter Settings

Access the following advanced host bus adapter settings through the Configuration
Settings menu in Fast!UTIL and select Advanced FC 4Gbps PCI-X Adapter
Settings. The default settings for the FC 4Gbps PCI-X HBA are as follows:
Execution Throttle
LUNs per Target
This setting forces the adapter to attempt to use the ID specified in the
Hard Loop ID setting. The default is Disabled.
If the FC 4Gbps PCI-X Adapter Hard Loop ID setting is Enabled, the
adapter attempts to use the ID specified in this setting. The default ID is 0.
You should set this ID to a unique value from 0-125 if there is more than
one adapter connected to a FC-AL loop, and the FC 4Gbps PCI-X Adapter
Hard Loop ID setting is Enabled.
When this bit is set, the BIOS will wait up to 5 minutes to find the first drive.
The default setting is Disabled.
This setting defines the type of connection (loop or point to point) or
connection preference. The default is 2.
This setting enables FCP-2 recovery. The default is Disabled. You should
change this setting to Disabled if the HBA is connected to a DS4000
storage server. The DS4000 storage server does not support a tape device
through the same Fibre-Channel HBA from the host server.
This setting determines the data rate. When this setting is 0, the FC 4Gbps
PCI-X HBA runs at 1Gbps. When this setting is 1, the FC 4Gbps PCI-X
HBA runs at 2Gbps. When this setting is 2, Fast!UTIL determines what rate
your system can accommodate and sets the rate accordingly. The default is
2 (auto-configure). When the setting is 3, the FC 4Gbps PCI-X HBA runs at
4Gbps.
Table 4. FC 4Gbps PCI-X HBA data rates
Bits 15–13 (h)
0
1
2
3
4–7
This setting specifies the maximum number of commands executing on any
one port. When the execution throttle of a port is reached, no new
commands are executed until the current command finishes executing. The
valid options for this setting are 1-256. The default is 256.
This setting specifies the number of LUNs per target. Multiple LUN support
is typically for redundant array of independent disks (RAID) servers that use
LUNs to map drives. The default is 256.
Data rate
1 gigabit/second
2 gigabits/second
Auto-negotiated
4 gigabits/second
Reserved
Chapter 3. Configuring the FC 4Gbps PCI-X Adapter with Fast!UTIL
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