LATE SUMMARY : disk replication

From: Ali Almutawa <>
Date: Wed Apr 03 2002 - 17:21:18 EST
I am sorry for the late Summary, but I didn't came up with what
satisfied me. First thanks to all those who replied to my questions,
most of them has recommended to use the dd command as follows : Dd
if=/dev/rdsk/c0t0d0s0 of=/dev/rdsk/c0t1d0s0 bs=1024
The problem is that this command is strongly preferred to be run in
single mode, and my machine is a productive system, fortunately , our
system is redundant , so we took the machine offline and inserted
another disk in the same machine and started imaging each slice after
the other. The process took a very long time, maybe over the 12 hours,
if you know that my hard disk is only 18GB . This is not applicable for
live productive system also there is no indication of what is going on
and how much time it might take , of course you can use this command to
monitor what is going on if you run this command in level 3 mode : truss
-p process_id 
After a long time , we have removed the hard disk and inserted it in the
other machine, and every thing goes as expected successfully.
My question , is there a similar command could be run to do the same job
[creating and exact image] while the system is running ? is the best to
used ufsdumb and restore, or there is something better that that ?
Ali Almutawa
-----Original Message-----
From: Ali Almutawa [] 
Sent: Wednesday, March 20, 2002 10:35 PM
To: ''
Subject: disk replication
Guru's ,
What is the best way to replicate a hard disk to another one. I have one
machine that I need to copy the whole image and dumps it to another new
disk and use it on another machine, and I need to see a replica of the
original machine, what is the best way to do that.
Thanks in advance.
Ali Almutawa [ NI2 ]
STC Systems Management
Office : 00973 883474 Mobile : 00973 9688797
Fax : 00973 9103474
sunmanagers mailing list
Received on Wed Apr 3 17:22:17 2002

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