Date: Wed, 10 Jan 2007 06:37:50 -0800
Reply-To: RolandRB <rolandberry@HOTMAIL.COM>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: RolandRB <rolandberry@HOTMAIL.COM>
Subject: Re: Copy of dataset corrupted with OS tools
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Ed Notari wrote:
> Hello folks,
> We recently had a moderately large dataset that corrupted during a copy.
> We run an Alpha system with Tru64 UNIX v5.1A. The dataset was just
> created on a RAID 5 volume and was copied ("cp" command) to another RAID
> 5 volume on the same SAN.
> The corruption was insidious (19 records out of 80,000,000) and
> clustered, as far as I can tell. The byte size of the files were
> identical, and a simple PROC CONTENTS doesn't show anything odd (no
> surprise). None of the logs (binary.errlog, etc) showed any odd
> behavior during the time the file was transferred or afterward.
> The upshot of all of this is;
> 1) What are SAS folk using to assure that copying datasets has worked?
> 2) Do I need to "touch" each record to verify the starting dataset is
> the same as the ending dataset?
> Ed Notari
> Transmissible Diseases Department
> Jerome H. Holland Laboratory
> American Red Cross
Did you run a PROC COMPARE to compare the dataset before and after and
was it this that showed up the problem?