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Re: scsi & linux



On Tue, 1 Dec 1998 16:42:54 +0200 (IST), Evgeny Stambulchik
<fnevgeny@plasma-gate.weizmann.ac.il> wrote:

>Hashibon Adham <phadham@aluf.technion.ac.il> wrote:
>>  Hi, 
>>  
>>  We  have a system with an Adaptec AHA-2940UW ultra
>>  wide scsi adapter capable of 16 bits transfer mode (not that it says much
>>  to me!)
.
.
>>  "scsi" part of dmesg output...
>>   -----------------------------
>>  
>>  aic7xxx: Cables present (Int-50 NO, Int-68 YES, Ext-68 NO)
See here                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>  (scsi0:0:0:0) Using wide (16 bit) transfers.
>>  (scsi0:0:0:0) Synchronous at 10.0MHz, offset 8.
>>    Vendor: SEAGATE   Model: ST39173W          Rev: 5764
>>    Type:   Direct-Access                      ANSI SCSI revision: 02
>>  Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
>>  (scsi0:0:3:0) Refusing WIDE negotiation; using 8 bit transfers.
>>  (scsi0:0:3:0) Synchronous at 6.67MHz, offset 15.
>>    Vendor: ARCHIVE   Model: Python 04106-XXX  Rev: 7270
>>    Type:   Sequential-Access                  ANSI SCSI revision: 02
>>  SCSI device sda: hdwr sector= 512 bytes. Sectors= 17783240 [8683 MB] [8.7
>>  GB]
>
>The message you mention refers to the tape only, not the disk. I don't
>understand, though, why the tape is connected to the wide interface.
It took me a minute to see what you mean. For those who have not followed
(like I did at first), the question here is why the tape is connected through
the wide cable when he has an unused internal 50 pin connector...

Well, I guess he has a wide to narrow SCSI cable.

In my home configuration I have my tape and CD writer on a narrow 50 pin
cable, and the disks on a 68 pin wide cable.

>Regards,
>
>Evgeny

Udi