Long Distance UNIX (Solaris) Cloning ? Post: 302157172

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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

01-10-2008

Registered User

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.!!

HikerLT

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LEARN ABOUT PLAN9

wren

WREN(3) 						     Library Functions Manual							   WREN(3)

NAME

       wren, ata - hard disk interface

SYNOPSIS

       bind #H[drive] /dev
       bind #w[target[.lun]] /dev

       /dev/hd0disk
       /dev/hd0partition
       /dev/sd0disk
       /dev/sd0partition
	...

DESCRIPTION

       The  hard  disk interfaces (wren, #w, is a SCSI disk; ata, #H, is an IDE or ATA disk) serve a one-level directory giving access to the hard
       disk partitions.  The parameter to attach defines the numerical SCSI target and logical unit number or the  IDE	drive  number  to  access.
       Both default to zero.

       Each  partition name is prefixed by hd and the numeric drive identifier.  The partition always exists and covers the entire disk.  The size
       of each partition as reported by stat(2) is the number of bytes in the partition, so the size of is the size of the entire disk.

       The partition also always exists; it is the last block on the disk for SCSI, second to last for IDE.  If it contains valid partition  data,
       those  partitions will be visible as well.  Every time the device is bound, the partitions are updated to reflect any changes in the parti-
       tion file.

       The format of the partition file is the string

	      plan9 partitions

       on a line, followed by partition specifications, one per line, consisting of a name and textual strings for the block start and	limit  for
       each partition on the disk.

       The program prep(8) writes the partition table for the disk; its use is preferred to writing it by hand.

SEE ALSO

       prep(8), scsi(3)

SOURCE

       /sys/src/9/port/devwren.c
       /sys/src/9/pc/devata.c

																	   WREN(3)