6.15.1System Considerations
It is not possible for the suppliers of various system components (e.g., targets, initiators, backplanes, terminators) to guarantee that a system can operate under “Hot Swap Case 4" conditions. Therefore, the system integrator bears the responsibility for ensuring that the system can meet “Hot Swap Case 4" operational criteria.
There are two metrics key to ensuring “Hot Swap Case 4" tolerance:
1.When a drive is being hot inserted into an active bus, a smaller capacitance on the SCSI bus pins create a smaller (that is, a lesser charge) transient spike on the bus.
2.When the drive is the closest drive to the connector at which another drive is being hot inserted, it is desirable that the input receivers ignore short low amplitude transients (usually via a low pass filter).
LVD SCSI devices may require more stringent system design to tolerate transients that occur during Case 4 insertion or removal. System integrators should consider the following when designing their backplanes or buses:
1.Larger
2.Larger SCSI
3.The universe of drives needs to be homogeneous. A 15 pF drive
Maxtor Atlas 10K V