Re: Raw partition backups
Date: 1995/04/13
Message-ID: <D6zMMC.5H3_at_nntpa.cb.att.com>#1/1
In article <3mi2rt$qud_at_newsbf02.news.aol.com>,
MarkP28665 <markp28665_at_aol.com> wrote:
>The UNIX command 'dd' is the only operating system command that will
>create a valid copy of a raw partition on most UNIX systems. Be advised
>that I was told while attending Oracle training by a classmate that his
>shop found out the hard way that even though other UNIX commands copied
>the raw partitions without indication of error. The files were unusable
>when they actually tried to use them during a recovery. I have heard of a
>utility called 'volcopy' that some systems have that works.
>
snip
>
>Mark -- No Witty Disclaimer
On SVR4, volcopy does exist, and it works MUCH faster than dd. You could also use cpio to copy the partition, I believe.
On a NCR 3555 running SVR4, we backup approximately 20 250 meg raw partitions using 2 8mm tape drives in approximately 3 hours.
You Sun/Solaris, HP, and AIX folks out there; do your OSs have something like volcopy?
Lou Avrami ( attmail!lavrami ) Received on Thu Apr 13 1995 - 00:00:00 CEST