Front Panel Switch Management
4-9
Compaq Confidential – Need to Know Required
Writer: Hilary Stead Project: Compaq StorageWorks SAN Switch 16 Installation and Hardware Guide Comments:
Part Number: EK-BCP28-IA / 161356-001 File Name: E-CH4 FRONT PANEL SWITCH MANAGEMENT.DOC Last Saved On: 9/30/99 11:27 AM
E_D_TOV
To view the Error Detect Time Out Value, press <Enter> while
E_D_TOV
displays on the front panel. You can adjust this value in 1-second increments
using the front panel controls, but it displays in milliseconds.
NOTE:
Use the flashSet command during a Telnet session to set the E_D_TOV value for
values other than whole seconds.
The E_D_TOV flags a potential error condition when an expected response is
not received (for example, an acknowledgment or reply in response to packet
receipt) within the set time limit. If the time for an expected response exceeds
the set value, an error condition results. The E_D_TOV value can range from
1 to 60 seconds.
NOTE:
The set value for E_D_TOV must be smaller than the set value for the R_A_TOV.
Data Field Size
To view the data field size, press <Enter> while
Data Field Size
displays on the
front panel. You can adjust this value using the front panel controls. The data
field size specifies the largest possible value, in bytes, for the size of a type 1
(data) frame. The switch advertises this value to other switches in the fabric
during fabric construction and to new devices that connect to the fabric for the
first time. Setting this to a value smaller than 2112 can result in decreased
performance.
Non-SCSI Tachyon Mode
When set, multiple sequences from different sources are interleaved to
Tachyon-based controllers at sequence boundaries rather than at frame
boundaries, resulting in better performance from Tachyon-based controllers.
Disable Device Probing
When set, devices that do not register themselves with the Name Server will
not be present in the Name Server database.
