5 Nov
2010
5 Nov
'10
10:52 a.m.
On 11/5/10 1:16 PM, Alexandre Souza - Listas wrote:
Ahh ok, I thought you had done some SCSI interfacing in the past.
SCSI is an entirely digital, very high-level interface. It uses the
same transport mechanism and low-level protocol to interface lots of
different things...mass storage, scanners, printers, banks of serial
ports (yes, banks of serial ports) and anything else you can think of.
It looks more like a networking protocol than a disk interface.
(because it's NOT a disk interface)
The SCSI protocols are also used with different low-level transport
mechanisms: SAS, FibreChannel, IBM's SSA, FireWire, ATAPI, and a few others.
There is no strange formatting, in the way that we normally think of
"formatting". It is not possible to reach those levels of a SCSI
device, so there are no incompatibilities. The host says "give me block
number 5324985", and sometime later, the target hard drive says "hey
host, here's the data for block number 5324985 that you asked for".
Zero format compatibility issues.
-Dave
--
Dave McGuire
Port Charlotte, FL
That'd be
a pretty different animal, with SCSI being a high-level
digital interface. There's no data separation, etc etc going on with
SCSI interfaces. (as I'm sure you already know)
No, I don't. I never studied the SCSI interfacing electronics/protocol. And now I'm moving (do you believe my car with my
things was robbed in
the door of my new house? Lucky I had an alarm and it stopped the car
500m from my house!!!
Oh no!! Beat him senseless!
Preserving/snapshotting the contents of a SCSI drive is as simple as
hooking it to a UNIX box and running a "dd" command.
It preserves any strange formatting? I realize I have ABSOLUTELY NO IDEA
of the low level workings of SCSI devices...