Hot Swap Disks

[Travis Riddle]

I would be careful with hot swapping IDE drives.  the -L option is really only for locking the door mechanism on removable storage devices (Zip, Jazz, etc).  The option you probably want is the -R and/or -U, however right in the man page for hdparm it says it is VERY DANGEROUS and USE AT YOUR OWN RISK.  Simply cutting the power to the drive through the caddy will probably hang your system unless your hardware is specifically designed for such action.  As well as hardware, your software will also need to expect this action or you will get erratic behavior at best.  

At any rate, in my experience hot swapping ANY drive (SCSI, FC, or IDE) is a last resort, even if the manufacturer rates the array as hot swappable compliant.

Travis


> -----Original Message-----
> From: fedora-list-admin at redhat.com
> [mailto:fedora-list-admin at redhat.com]On Behalf Of John Sutherland
> Sent: Tuesday, January 20, 2004 12:51 AM
> To: fedora-list at redhat.com
> Subject: Re: Hot Swap Disks
> 
> 
> It's drive caddies.
> 
> I assume that I can just unmount the disk, and turn off the power (by
> either key or command?
> 
> Thanks again.
> 
> John S.
> 
> On Mon, 2004-01-19 at 23:59, Peter Kiem wrote:
> > > Is there anyway to turn off an IDE hard disk for hot swapping?
> > 
> > Are you using proper hot-swapping removable drive caddies or are you
> > opening up the computer case?
> > 
> > For my server running IDE drives, when I turn the key to 
> unlock the drive
> > caddy it automagically cuts power to the drive so it can be removed.
> > 
> > -- 
> > Regards,
> > +-----------------------------+---------------------------------+
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> > | Zordah IT             /V\   | Mobile    : +61 0414 724 766    |
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> 
> 
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