[SunHELP] moving a disk

[Vermette, Matt Spawar (723)]

Go to this link, which I have done, and I did not see an entry for "hot-pluggable disk bays".
http://sunsolve.sun.com/handbook_pub/Systems/E4500/spec.html
 
This would mean to me that pulling a hard drive and reinserting would not be recommended while the system is running.
 
This would be my recommendation:
    a)  Shut the system down
    b)  Move your disk from current location to new location
    c)  Locate a Solaris 7, 8 or 9 install cd-rom
    d)  Power on the system and execute a 'stop a' at the "Initializing Memory' to access the 'ok' prompt.
    e)  Execute 'probe-scsi' and ensure all your drives are being seen by your hardware PROM
    f)  Boot off the the cdrom utilizing the following command:  'boot cdrom -sw'.  This will allow you to boot from the cdrom and utilize this environment to setup your logical, physical, and instance names correctly
    g)  Mount your root file system onto a mount point provided by the cdrom environment utilizing the following command:  'mount /dev/dsk/c0t0d0s0 /a'
    h)  Backup your /etc/path_to_install file utilizing the following command:  'mv /a/etc/path_to_install /a/etc/path_to_install.orig'
    i)  Clean out your logical path entries utilizing the following command:  'rm /a/dev/dsk/c*'
    j)  Clean out your physical  path entries utilizing the following command:  'rm /a/dev/rdsk/c*'
    k)  Clean out your magnetic tape entries utilizing the following command:  'rm /a/dev/rmt/*'
    l)  Rebuild your device tree utilizing the following command:  'devfsadm -r /a -p /a/etc/path_to_install'
    m)  Ensure your tree was rebuilt executing the following command:  'cd /a/dev/dsk; ls -l; cd /a/dev/rdsk; ls -l; cd /a/dev/rmt; ls -l'
    n)  Prepare to reboot the system.  'cd /; umount /a; fsck -F ufs /dev/rdsk/c0t0d0s0'
    o)  Reboot the system.  You will not be required to execute a 'boot -r'.
 
Matt

	-----Original Message----- 
	From: sunhelp-bounces at sunhelp.org on behalf of Grindell, Joan M. 
	Sent: Mon 8/30/2004 9:20 AM 
	To: 'The SunHELP List' 
	Cc: 
	Subject: RE: [SunHELP] moving a disk
	
	
This disk is on a 4500.  We installed the disk with the system up on Friday
with the system up and running.

How would i know if the 4500 has hot-pluggable disk bays.

to get rid of the old /dev (the position from which it is being moved) the
only option would be a "boot -r"?

thanks
Joan

-----Original Message-----
From: Vermette, Matt Spawar (723) [mailto:matt.vermette at navy.mil]
Sent: Monday, August 30, 2004 9:02 AM
To: The SunHELP List
Subject: RE: [SunHELP] moving a disk


Joan,

The only concern I would have is this:
    a)  The system does not have hot-pluggable disk bays.  If this is the
case, you could damage a drive by removing and inserting while the system is
powered

I would schedule downtime for the server so that you can perform this task
ensuring zero damage.

Devfsadm is a good tool to complete tasks while the system is running,
Solaris 9 and above has a daemon running constantly so you should not have
to run devfsadm manually.  So the hard drive links will be created
automatically. 

The only downfall is that you will have an entry in the /dev/dsk that will
be incorrect due to the relocation.

Matt

        -----Original Message-----
        From: sunhelp-bounces at sunhelp.org on behalf of Grindell, Joan M.
        Sent: Mon 8/30/2004 8:29 AM
        To: 'Solaris-Users mailing list'; 'The SunHELP List'
        Cc:
        Subject: [SunHELP] moving a disk
       
       
        Would i run into a problem if i moved a disk from one slot to
another (then
        ran devfsadm).  There are no mounts on the disks.
       
            I installed teh disk on Friday, but i realize now that i want
the disk
        on the other controller.
       
        thanks
        Joan
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