|Newer page:||version 8||Last edited on Sunday, September 11, 2005 9:12:24 am||by AristotlePagaltzis|
|Older page:||version 7||Last edited on Friday, July 29, 2005 11:41:12 am||by CraigBox||Revert|
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SCSI is an
[Acronym] for Small Computer Systems Interconnect - a method of attaching peripherals to a computer motherboard. People generally consider SCSI to be more reliable (and more expensive) than [IDE]
+ [Acronym] for .
SCSI allows better throughput
than IDE by allowing commands
to be sent asynchronously - that is, you can send a "read" or "write" request and return immediately, and sometime later (when the device has finished reading or writing) do something with the data. In contrast, for IDE the read request doesn't return until the data has been physically read from the disk
+ than IDE to be .
SCSI protocol requires a host card (called an adapter)
. SCSI peripherals are then attached
to this card
. In theory (ha!) up
to 127 devices in one chain can be attached to each host card
. SCSI cables require a special terminator at each end
+ SCSI . SCSI to . In to . SCSI .
People sometimes describe
SCSI as requiring black magic
( including sacrifricing goat's blood, or occasionally Lusers
+ SCSI ( ) .
__Note:__ Do not underestimate the
black majick involved in SCSI! If you don't have
a terminator on the non-controller end, it might work for a while, and then never work again. Or it might work under some OS
's but not others. Put a terminator on it already. While you're at it
, ensure BOTH ends of each channel are terminated. Most modern cards have "Auto" termination, and this almost always works these days, but if unsure, set to "Enabled", terminate the end of the cable, and if you're unsure if your cable terminator is active
or passive, enable "term. power" on at least one of the devices on the channel
+ black a 's , or .
The SCSI instruction set for controlling devices is used
non- SCSI places -
, [ ATAPI
of SCSI commands for [IDE] devices
, and [USB]
" uses SCSI commands over USB (which is why you need mod_scsi
and scsi_generic support in
the LinuxKernel for usb mass_storage support)
+ in non- for , [ ] a of , and " " and the .
] is called
+ SCSI [ ] is [ ] .
!Debian Woody doesn't detect my
Go to http://people.debian.org/~blade/install/preload/ and download the bf24 SCSI driver disc. Modules for the kernel included with Debian's bootfloppy-2.4 kernel are on this disc. It will make the woody install nice and smooth
+ SCSI .