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Old 12-19-2010, 11:43 PM   #1
Shenkle
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Registered: Dec 2010
Posts: 6

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Using USB extrenal drive for backups


Hi,

I have inherited a network server running Redhat Enterprise (4?) which uses an external USB drive for backups. These have been scheduled to run at midnight each night.

I want to use 2 external drives to hold the backups (exchanging the usb drive each day). My question is: Is there anything I need to do to a new USB drive before exchanging the drives (eg. formatting etc) or can I simply just plug the new one in and let it run?

I apologise for the very basic nature of this question but I have no clue about Linux.

I appreciate any assistance you can give.

Cheers
 
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Old 12-20-2010, 12:13 AM   #2
paulsm4
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Registered: Mar 2004
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Hi -

The short answer is "just plug it in, and you should be good." It really IS almost as simple as that !

The longer answer is:
1. All "filesystems" (for example, every partition on your hard drives) are "mounted" (before you can read from and write to them).

2. The commands to mount and unmount filesystems are "mount" and "unmount", respectively.

3. The command to see what filesystems are currently mounted is also "mount" (with no arguments).
Code:
EXAMPLE:
mount
/dev/sda2 on / type ext4 (rw,errors=remount-ro,commit=0)
proc on /proc type proc (rw,noexec,nosuid,nodev)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev type devtmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/paulsm/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=paulsm)
/dev/sdb1 on /media/My Passport type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)
<= In this example, I have a little Passport drive mounted on "/dev/sdb1"

4. I would encourage you to:
a) Run "mount" (to familiarize yourself with your filesystems)
b) Identify your USB drive
c) Try "unmounting" it (so you can safely remove it)
d) Try plugging it back in (to verify it remounts itself automatically, and correctly)

'Hope that helps
 
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Old 12-20-2010, 12:31 AM   #3
catkin
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Registered: Dec 2008
Location: Tamil Nadu, India
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Congratulations on your elevation to LQ guruhood, paulsm4

[the above was paulsm4's 5000th post]
 
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Old 12-20-2010, 01:28 AM   #4
Shenkle
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Registered: Dec 2010
Posts: 6

Original Poster
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To paulsm4: Thank you for your prompt reply. I'll do as you sugest and update with teh progress in my understanding.

Many thanks!
 
1 members found this post helpful.
Old 12-20-2010, 09:47 AM   #5
paulsm4
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Thank you!
 
Old 12-20-2010, 06:39 PM   #6
Shenkle
LQ Newbie
 
Registered: Dec 2010
Posts: 6

Original Poster
Rep: Reputation: 7
Hi Paul,

1st up date. The system recognises the new drive and it mounts and dismounts correctly it. It's just completed a backup so all good.

Many thanks for your help and please allow me to genuflect

Cheers

Alan
 
Old 01-02-2011, 12:03 PM   #7
archtoad6
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Registered: Oct 2004
Location: Houston, TX (usa)
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Thumbs up

Good LQ attitude, Shenkle, keep the updates coming.


Edit: As long as we're noticing, that was my post 4040 (40-40), what does that say about my eyesight?

Last edited by archtoad6; 01-02-2011 at 12:08 PM. Reason: add silliness
 
  


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