Seagate ST34502LW/LC 用户手册
24
Cheetah 9LP Installation Guide, Rev. B
use these wide drives on a standard (non-wide) 8-bit data bus
if you provide proper termination to the upper 8-bit data lines.
This is often referred to as providing “high-9 termination.”
if you provide proper termination to the upper 8-bit data lines.
This is often referred to as providing “high-9 termination.”
The following table lists the maximum cable lengths and number
of devices using single-ended and LVD I/O circuits allowed on a
daisy-chain cable for 10, 20, and 40 Mtransfers/sec I/O data
transfer rates.
of devices using single-ended and LVD I/O circuits allowed on a
daisy-chain cable for 10, 20, and 40 Mtransfers/sec I/O data
transfer rates.
A maximum of 16 devices can be connected on a 16-bit wide
data bus.
data bus.
Table 1.
Cable characteristics for SE and LVD circuits
SCSI
driver
type
driver
type
I/O transfer rate
(Mtransfers/s)
(Mtransfers/s)
Maximum
number of
devices on
bus
number of
devices on
bus
Maximum cable
length allowed
length allowed
SE
10
16
6 meters (19.7 ft.)
SE
20
4
3 meters (9.8 ft.)
SE
20
8
1.5 meters (4.9 ft.)
LVD
40
16
12 meters (39.4 ft.)