I have a Adaptec 39320A-R card with 2 x 36GB SCSI HD.

Booting up Slack 9.1 with adaptes.s kernel will detect both the card and hard disks (2 x 36GB). (hard disk detect as /dev/sda, etc)

However, once I configure the Adaptec card as hostraid (1 x 73GB), it ask me for a name for the disk array. So I called it "rd0".

I cannot find any hard disk devices or "rd0". However, it can detect the adaptec card as AIC79xx.

I also tried another name "u320", thinking that "rd0" may be a reserved name.

This is the first time I uses scsi hard disk and configure a hardware raid.
Appreciate if anyone can help out.

Ok, same reply again ;)

Adaptec HostRaid is a software raid, not "real" one.
There is binary drivers for some RedHat/SuSe versions on adaptec/intel sites, there is no opensource driver.
Since Adaptec HostRaid is a software one, why not to use softraid bundled with kernel? (software-raid-howto) there is more options for it, speed ~ same as adaptec drivers.
Imho best solution is to buy "real" raid card ;)

P.S.: Have same problem NOW ;) But i will buy intel srczcr adapter (tomorrow) for "real hardware" raid.