Hi.
I have a solaris 8 workstation with a vxa-2 8mm drive attached to it
that I would like to use for backing up seven old sunOs workstations.
Can I do a ufsdump on the solaris system to remotely dump the other
workstations?
Currently I am doing this:
rsh -n "remotesunoshost" /etc/dump 0dsbfu \
54000 37000 126 "solarishost":/dev/rmt/0n /dev/rsd"partition"
This works, but I'm not sure I'm maximizing the full 160gig compressed
capacity of the VXA-2 drive.

Any suggestions?
Thanks.

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In article <3166648.1059589890@dbforums.com>,
hemiguy <member34609@dbforums.com> wrote:

> Hi.
> I have a solaris 8 workstation with a vxa-2 8mm drive attached to it
> that I would like to use for backing up seven old sunOs workstations.
> Can I do a ufsdump on the solaris system to remotely dump the other
> workstations?
> Currently I am doing this:
> rsh -n "remotesunoshost" /etc/dump 0dsbfu \
> 54000 37000 126 "solarishost":/dev/rmt/0n /dev/rsd"partition"
> This works, but I'm not sure I'm maximizing the full 160gig compressed
> capacity of the VXA-2 drive.

If you're only using the "0" device, you aren't. Use the "0un" device
instead. That will use the maximum compression as defined in your
/kernel/drv/st.conf entry and no-rewind.

--
DeeDee, don't press that button! DeeDee! NO! Dee...

hemiguy <member34609@dbforums.com> wrote:

> Hi.
> I have a solaris 8 workstation with a vxa-2 8mm drive attached to it
> that I would like to use for backing up seven old sunOs workstations.
> Can I do a ufsdump on the solaris system to remotely dump the other
> workstations?
> Currently I am doing this:
> rsh -n "remotesunoshost" /etc/dump 0dsbfu \
> 54000 37000 126 "solarishost":/dev/rmt/0n /dev/rsd"partition"
> This works, but I'm not sure I'm maximizing the full 160gig compressed
> capacity of the VXA-2 drive.

s size
Specify the size of the volume being dumped to. Not
normally required, as ufsdump can detect end-of-media.
When the specified size is reached, ufsdump waits for
you to change the volume.

37000f * 12 in/ft * 54000 bit/in * 1/8 bytes/bit * 1/1024^2 Mbytes/byte
=> 2858 Mbytes.

I'd say you're limiting your tape to 2.8G.

Don't use s.
Don't use d.

Use the highest capacity tape device (see your tape documentation for
which one that is).

--
Darren Dunham ddunham@taos.com
Unix System Administrator Taos - The SysAdmin Company
Got some Dr Pepper? San Francisco, CA bay area
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