3 2 drives connection – FUJITSU MPB3052AT User Manual
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C141-E045-02EN
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2.2.3
2 drives connection
ATA interface
AT bus
(Host interface)
Disk drive #1
Disk drive #0
HA
(Host adaptor)
Host
Note:
When the drive that is not conformed to ATA is connected to the disk drive is above
configuration, the operation is not guaranteed.
Figure 2.4
2 drives configuration
IMPORTANT
HA (host adapter) consists of address decoder, driver, and receiver.
ATA is an abbreviation of "AT attachment". The disk drive is
conformed to the ATA-3 interface.
At high speed data transfer (PIO mode 3, mode 4, DMA mode 2 or
ultra DMA mode 2), occurrence of ringing or crosstalk of the signal
lines (AT bus) between the HA and the disk drive may be a great
cause of the obstruction of system reliability. Thus, it is necessary
that the capacitance of the signal lines including the HA and cable
does not exceed the ATA-3 and ATA-4 standard, and the cable
length between the HA and the disk drive should be as short as
possible.