File Name: tempo_x_esata_4+4_qsg.pdf Document Version: QS-TSATAII-X44-E-A-080508 File Size: 1.7 MB Installation instructions for installing the Sonnet Tempo-X eSATA 4+4 8-Port Serial ATA PCI-X Host Adapter into a supported Mac or Windows computer.
Our testing has shown that a four-drive array will sustain maximum reads and writes of about 200 MB/second in a 64bit, 33MHz PCI slot. An eight-drive array will not provide any additional performance beyond that of a four-drive array in that slot. To get significantly more performance, you need to use a machine with a PCI-X slot.
Another manufacturer's previously-installed SATA driver may be accessing a Sonnet SATA card in error causing a drive access slowdown. For example, we have seen Fusion D400QR5 performance drop from 200MB/s to under 50MB/s in such circumstances. The solution is to remove the other manufacturer's SATA driver.
