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Old 08-26-2005, 04:13 AM   #1
Azhrarn
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Registered: Aug 2005
Location: Europe
Posts: 63

Rep: Reputation: 15
UberNewbie: Amanda & Scsi drives


Hi there!
I m a complete newbie, notwithstanding tho, I have mysteriously managed to install a Red Hat 9.0 Server, upgrade it, configure Samba & get it to run as the main file server of the office, which I am pretty proud of :P
Miracles of Webmin you're probably thinking, and you'd be right!

The problem is that now I m tackling Amanda with a HP SureStore Dat 8 SCSI external drive & its driving me nuts.

There are several issues, but the main on is that I still don t understand how Drives work in Linux. As a Windows Admin, I m used to adding drives, and once installed, seeing them appearing with a specific letter on the computer.

Linux however places these in the /dev/ folder with names such as sda1, sdb1 ect.
Why is this? Is there a logic behind the naming format? Is it somehow sequential?

I added the SCSI card & RH9 found it with the hardware demon, under Info, in the Control Panel, it displays the Adaptec SCSI card under the PCI field but not under the SCSI field, is this correct?
Am I supposed to install drivers for the SureStore Dat 8 or is the SCSI card sufficient?

How do I access the drive, how do I find out what name it has under /dev/ ?

And finally, why on earth does everyone disable hardware compression with Amanda? All I see is comments like "See other posts" or "You get the idea", but I can't find nor other posts nor ideas....help !

I know it's a lot to ask, but its probably bread and butter for you guys, and its a bloody mountain for me, and I ve got enough on my hand without wasting hours & hours reading on the Internet for stuff I don t know how to find!
Thanks a million
Cheers
Paul
 
Old 08-26-2005, 02:17 PM   #2
renevanh
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Registered: Aug 2005
Location: Driebergen, The Netherlands
Distribution: RedHat9, Puppy 1.0.4
Posts: 4

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Where Windows gives the drives letters (C, D enz.), Linux works with.. more letters!

IDE HDdrives:
Windows C: -> Linux hda
Windows D: -> Linux hdb
These are two physical drives, two harddisks.
Working with partitions, Windows still gives the letters, but Linux doesn't:
Windows C: (first partition) -> Linux hda1
Windows D: (Second partition) -> Linux hda2

Got it? Good. Next step:

IDE HDdrives got the hd*# names (where *=letter and #=partition number)
SCSI HDdrives will be called sd*# (same way of giving letter and number)

Now the drive is just an external or secondary drive (or third, fourth...), and if not configured, it won't mount at boot.
In the command line, (with root access)type:

Code:
cd /mnt [ENTER]
mount sd*# (where * is the number of the next physical drive, and # the number of the partition on it)
Now navigate to the mnt folder, and go into the sd*# dir. You've entered you're harddisk.

Regards,

René

P.s.: Since I'm quite new to Linux too, i might have said something wrong. Exspecially the mount part... I might have forgotten something, or not. Just try and please correct me if I'm wrong!
 
Old 08-29-2005, 03:10 AM   #3
Azhrarn
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Registered: Aug 2005
Location: Europe
Posts: 63

Original Poster
Rep: Reputation: 15
Great info, thanks a lot.
Its amazing, its so obvious once someone explains it to you
Cheers & thanks!!
 
  


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