SUMMARY: most efficient method to transfer disk-to-disk

From: Jeff Kennedy <>
Date: Fri Jun 21 2002 - 17:21:43 EDT
All respondents said cpio, tar, and ufsdump.  Noone really had much to
say as to which was really better or had the least overhead but I got
the point.

Ultimately we ended up using 'cp -pR' but that's a whole different story
(one which I may relay as a question a bit later).  But in any case, any
of these 3 are used with success and speed by most people.

Thanks for all the replies.


-------- Original Message --------
Subject: most efficient method to transfer disk-to-disk
Date: Fri, 14 Jun 2002 13:47:25 -0700
From: "Jeff Kennedy" <>
Organization: AMCC
To: Sun-Managers List <>

I am embarking on a mail store transfer tonight between ufs and vxfs. 
Tar has a large overhead while ufsdump is obviously not an option. 
These disks are both local (fcal san attached) so no network issues

I am thinking a combination of ufsdump piped to dd might be the most
efficient but I don't know this for sure and I also do not know the
syntax for such a transfer.

Looking for suggestions and syntax.  FYI; filesystems are /webdata and
/mail_data  (/webdata is the current ufs file system).

Jeff Kennedy
Unix Administrator
sunmanagers mailing list
Received on Fri Jun 21 17:32:40 2002

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