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Full Discussion: Long Distance UNIX (Solaris) Cloning ?
Top Forums UNIX for Dummies Questions & Answers Long Distance UNIX (Solaris) Cloning ? Post 302157172 by HikerLT on Thursday 10th of January 2008 09:36:06 AM
Old 01-10-2008
Long Distance UNIX (Solaris) Cloning ?
Need some advice and guidance for this UNIX beginner. Due to downsizing I have inherited the SysAdmin duties..(sigh). Please excuse and forgive me if I use the wrong terms below....

Situation:

We have UNIX ( Solaris 7/8/9( it varies) on Sun Ultra 10's) servers located at several global locations - in Malaysia, Mexico, and South Carolina. We access these from our New England location via the corporate network, thru firewalls located at these sites.

At each of the sites, we have a UNIX server ( Ultra 10 running Solaris) that acts as a gateway server, that bridges from the corporate network, to a isolated "Test Engineering" network within the remote factory. Hanging off of this "Test Eng Network", are more Ultra-10 Servers, used as NMS Network Management System servers to run Systems level traffic tests on test equipment.

Goal: Is to make duplicate clones of each of these servers hard drives, so if ( and When) they die and crash, we can rapidly power up and attach the cloned server ( with duplicate hard drives) and prevent downtime.

Problem:
1) These Ultra-10's have 2 hard drives in them, attached to the IDE bus connections - thus no way to attach a new fresh drive and do a "DD" duplication, as both IDE connections are in use..

2) Due to the remote location , and lack of expertise in IT capability there, we also can't rely on the local people to dismantle and attach
the fresh drive to do a DD clone anyways - too risky.

3) We want to avoid powering down these servers, as we have had problems in the past of them rebooting without hard drive crashes due to their age.

My Question:

Is there a way to make a copy of each hard drive, by doing a copy over the network?. Would this involve partitioning the fresh drive( as an attachment 2nd drive on a 1 drive Solaris system in my lab) to match the same partitions as the ones in the remote global location that we want to copy , and then copying all of the files in each partition/directory.??

Or is there a way to do the equivalent of a DD cloning operation between 2 systems that are on a global network...
??


Any ideas or advice is appreciated.!!
 

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LEARN ABOUT DEBIAN

hd

HD(4)							     Linux Programmer's Manual							     HD(4)

NAME

       hd - MFM/IDE hard disk devices

DESCRIPTION

       The  hd*  devices  are block devices to access MFM/IDE hard disk drives in raw mode.  The master drive on the primary IDE controller (major
       device number 3) is hda; the slave drive is hdb.  The master drive of the second controller (major device number 22) is hdc and	the  slave
       hdd.

       General	IDE block device names have the form hdX, or hdXP, where X is a letter denoting the physical drive, and P is a number denoting the
       partition on that physical drive.  The first form, hdX, is used to address the whole drive.  Partition numbers are assigned  in	the  order
       the  partitions	are  discovered,  and only nonempty, nonextended partitions get a number.  However, partition numbers 1-4 are given to the
       four partitions described in the MBR (the "primary" partitions), regardless of whether they are unused or extended.  Thus, the first  logi-
       cal  partition  will be hdX5.  Both DOS-type partitioning and BSD-disklabel partitioning are supported.	You can have at most 63 partitions
       on an IDE disk.

       For example, /dev/hda refers to all of the first IDE drive in the system; and /dev/hdb3 refers to the third DOS "primary" partition on  the
       second one.

       They are typically created by:

	      mknod -m 660 /dev/hda b 3 0
	      mknod -m 660 /dev/hda1 b 3 1
	      mknod -m 660 /dev/hda2 b 3 2
	      ...
	      mknod -m 660 /dev/hda8 b 3 8
	      mknod -m 660 /dev/hdb b 3 64
	      mknod -m 660 /dev/hdb1 b 3 65
	      mknod -m 660 /dev/hdb2 b 3 66
	      ...
	      mknod -m 660 /dev/hdb8 b 3 72
	      chown root:disk /dev/hd*

FILES

       /dev/hd*

SEE ALSO

       chown(1), mknod(1), sd(4), mount(8)

COLOPHON

       This  page is part of release 3.44 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    1992-12-17								     HD(4)
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