Apple Mac 8600 User Manual
Page 30
Basics
Ultra Wide SCSI - 28
JackHammer can transfer data through the Ultra SCSI-3
portion of the card at rates up to 40 MB/s (as allowed by the
SCSI-3 specification). The PCI portion of the card is capable
of data transfer rate bursts up to 132 MB/s. This capability
means the Workgroup Server 9650/233 and 9650/350
can receive data as fast as the drives can provide it. Simply
connecting the JackHammer•SE card to the SCSI drives
improves their overall performance.
To ensure the best possible disk I/O performance, the WS
9650 ships with all internal hard drives attached to the
JackHammer•SE card via the 68-pin Ultra Wide SCSI cable.
The WS 9650 allows for a total of four internal Ultra
devices. Due to electrical signal limitations with Ultra
devices, Apple Computer does not recommend connecting
external devices to the JackHammer•SE card.
Some of the drives that are installed in the WS 9650 at the