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Installation
Parity Check Enable/Disable (S5)
DDS Pass-Through Mode Enable/Disable (S6)
Inquiry String (S7)
Power-on Self-Test Mode Enable/Disable (S8)
Switches 9 and 10
Product Manual
The S5 switch enables or disables parity checking for the SCSI bus.
The default is parity disabled (S5 = OFF).
S5 = ON enables parity checking
S5 = OFF disables parity checking
The S6 switch enables or disables DDS pass-through mode. The default is DDS
pass-through mode disabled (S6=OFF).
S6 = ON enables DDS pass-through mode
S6 = OFF disables DDS pass-through mode
If you are using the DIP switches to set the DDS pass-through mode, move the
DDS pass-through jumpers on the jumper block to the OFF position.
When S6 is OFF, DDS-DC data compression is ENABLED during writing.
When S6 is ON, DDS-DC data compression is DISABLED. During a read operation,
compressed data is always decompressed, regardless of the position of S6.
The function of the S6 switch can be overridden by the proper SCSI Mode Select
command issued from the host computer. Regardless of the position of S6, the
Mode Select command can independently enable or disable data compression.
The S7 switch is used to select the SCSI inquiry string. The default setting (S7=ON)
enables the Seagate inquiry string. You can set it to Archive to provide compatibility
with older backup software.
S7 = ON enables Seagate inquiry string
S7 = OFF enables Archive inquiry string
The S8 switch enables or disables execution of power-on self-test (POST)
diagnostics when the drive is first powered on. When ON, the drive responds to
SCSI commands only after successful completion of the test (about 5 seconds).
The default is power-on self-test mode disabled (S8 = OFF).
S8 = ON enables power-on self-test mode
S8 = OFF disables power-on self-test mode
These switches are reserved and should not be used.
Chapter 3
Page 23
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