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-   -   SCSI - how to connect (https://www.linuxquestions.org/questions/linux-hardware-18/scsi-how-to-connect-348864/)

czezz 08-01-2005 10:53 AM

SCSI - how to connect
 
I had never before to do with SCSI drive.
Now im going to connect Ultra 320 SCSI disk as a second disk.
Is this same as it is in IDE drives that Master disk and Slave disk must be set with jumpers ?
Or no jumpers settings need to be done and it depend in order of connection to controler ?

The disk is Seagate ST336607LW and controler is adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER ( in old HP NETSERVER 60E )

n0xvb 08-01-2005 12:29 PM

SCSI devices are assigned an ID from 0 to 7, typically by jumpers (some allow 8-15 also). The SCSI adapter most likely has ID of 0, and you can assign any unused ID to any SCSI device.

It does not matter the order that they are connected, although the SCSI chain needs to be terminated on both ends. This used to require a terminator, but most devices and adapters have it built in now, just have to set a jumper.

Typically the higher priority devices (adapter, hard drives) get lower numbers and lower priority devices (scanners, CDROMs) get larger IDs.

Hope that helps!

czezz 08-01-2005 02:30 PM

When i connect both of them then server hang over for a long time during moment where I can press CTRL+A to enter SCSI Bios. After that server/controller cant find any of them.
When I connect each of them in a single mode ( during 1 start up only 1 disk connected ) then everything goes fine. I dont even need to enter bios.

Should I prepear them befor connection ? Is this possible that they r in conflict ??
Should I do any jumpers setting as it is in IDE drives ???

imitheos 08-03-2005 08:44 AM

Quote:

Originally posted by czezz
When i connect both of them then server hang over for a long time during moment where I can press CTRL+A to enter SCSI Bios. After that server/controller cant find any of them.
When I connect each of them in a single mode ( during 1 start up only 1 disk connected ) then everything goes fine. I dont even need to enter bios.

Should I prepear them befor connection ? Is this possible that they r in conflict ??
Should I do any jumpers setting as it is in IDE drives ???

What do you mean by "Both of them" ?
The current disk is also scsi ?

n0xvb is right about the scsi setup except for one thing. Usually, the controller is id 7.

Your disk is wide lvd, so it can have any id from 0 to 15.
As n0xvb mentioned hard disks usually get low id so that they get high priority.

Since, the disk is LVD it is has no termination jumper (which make things more easy for you).
If your setup has another hard disk and it is the only device on the bus, then it is terminated properly at both
ends (one termination on the controller, and one on the cable).
If you watch your cable it should have a terminator in the end (usually a black rectangle box).

You connect the hard disk in the cable and it should work.
When a system has only 1 hard disk it is usually setup as ID0 and the controller is setup to boot from ID0.
If that is the case, which i believe it is (if someone has not mess with it) then you give ID2 for example to the disk
and connect it to the connector on the cable.

http://www.seagate.com/support/disc/...100195488b.pdf
This PDF has the basic installation instructions for the disk and it also mentions what jumper caps you put for each ID, so i don't
think you would be confused.

I believe it won't be difficult for you to do it.
I am sorry that my post is so generic but i don't know how your devices are setup.

Hope i helped.

czezz 08-04-2005 08:22 AM

Thanks guys for suppoort.
imitheos: the link that u gave me was very useful. There is a topic how to set jumpers and baisictly that was what I was looking for.

imitheos 08-04-2005 05:30 PM

Quote:

Originally posted by czezz
Thanks guys for suppoort.
imitheos: the link that u gave me was very useful. There is a topic how to set jumpers and baisictly that was what I was looking for.

Glad i helped.
I told you that your setup is easy. The only thing is you setup the jumpers for the ID (every ID must be unique)


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