From owner-freebsd-questions  Fri Nov 12 13:30:29 1999
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Date: Fri, 12 Nov 1999 16:30:22 -0500 (EST)
From: root <root@blane.interland.net>
To: courtney@whtz.com
Cc: freebsd-questions@FreeBSD.ORG
Subject: RE: sync question
In-Reply-To: <85256827.006AD982.00@mail.whtz.com>
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Thankyou for all your responses.  I have got the exact answer I was hoping
for.  Thankyou again.


Andrew Hall


> 
> 
> I wouldn't worry about the drives either, provided the systems are packed
> well...I have seen units that are on m obile productions trucks that travel
> all across the country EVERY week- via truck!  All drives in the system
> NEVER had a problem- this includes little crappy IDE drives in a desktop
> PC.  So worry more about the logistics of things, and your systems should
> travel "happy"
> 
> Bernie Courtney
> Z100 New York Radio Engineering
> mailto:bernie@z100.com
> 
> 
> 
> 
> David.Costa@tellabs.com on 11/12/99 01:39:30 PM
>                                                               
>                                                               
>                                                               
>  To:      freebsd-questions@FreeBSD.ORG,                      
>           root@blane.interland.net                            
>                                                               
>  cc:      (bcc: Bernard Courtney/z100)                        
>                                                               
>                                                               
>                                                               
>  Subject: RE: sync question                                   
>                                                               
> 
> 
> 
> 
> 
> 
> 
> 
> Well, I doubt if sync parks the drive heads, as this happens
> automatically in all modern hard drives.
> 
> In all modern drives based on voice coil technology, the heads are
> parked by virtue of removing power. This covers both IDE and SCSI
> drives. I haven't seen a drive based on stepper motor technology in ten
> years. These drives required a program to move the heads to a "parked"
> position.
> 
> If the system is packed adequately, I wouldn't be concerned about
> shipping damage to the hard drive.
> 
> Dave Costa
> 
> -----Original Message-----
> From: root@blane.interland.net [mailto:root@blane.interland.net]
> Sent: Friday, November 12, 1999 12:38 PM
> To: freebsd-questions@FreeBSD.ORG
> Subject: FW: sync question
> 
> 
> Hello,
> 
> First post here.  I have a need to move 15 freebsd server over 1000
> miles
> in a very short period of time.  Ie:  8 hours.  We are going to charter
> a
> plane to accomplish this.  I do not want to pull the harddrives out of
> the
> server if at all possible.  So my question is this:  Does sync(2) called
> by shutdown(8) or halt(8) park the heads of the drive?  I need to know
> if
> I should take the drives out or will they be safe enough in the server
> if
> the server packed good will survive the trip.  My thinking is if the
> heads
> are parked then no harm no foul.  Thanks in advance.
> 
> 
> Andrew Hall
> 
> 
> 
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> 
> 



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