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mirroring root on sol2.5.1

mirroring root on sol2.5.1

Post by Christoph Torlinsk » Fri, 27 Jun 1997 04:00:00



 Hello out there. I am contemplating a mirrored root disk setup on
 my UE3000 server. We have not installed any volume manager on the system
yet...however we do have  the bundled in ODS?SDS 4.0. So my question is this,
which way should we go to quickly and easily mirror root and setup for
 mirrored root booting? We want good redundancy and also want to use
the VM for other tasks. However we are not sure wether to go with whats Free
or pay extra and get Verias. What would you all recommend? I have used
veritas on a sparc array before and liked it....

 thanks,

-chris

 
 
 
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mirroring root on sol2.5.1

Post by Michael G. Beir » Sat, 28 Jun 1997 04:00:00




Quote:> Hello out there. I am contemplating a mirrored root disk setup on
> my UE3000 server. We have not installed any volume manager on the system
>yet...however we do have  the bundled in ODS?SDS 4.0. So my question is this,
>which way should we go to quickly and easily mirror root and setup for
> mirrored root booting? We want good redundancy and also want to use
>the VM for other tasks. However we are not sure wether to go with whats Free
>or pay extra and get Verias. What would you all recommend? I have used
>veritas on a sparc array before and liked it....

The Last time I checked, more than 2 years ago, Sun did not support booting
an alternate disk under Veritas. Notice that I didn't say that it wouldn't
work, but that Sun wouldn't support it.  The Online Disk Suite manual had
a whole section devoted to mirroring root, swap and /usr which worked
very well. Just remember to write down the correct boot command
for the mirrored root drive.  There is a problem with mirroring swap though.
If your system panics, which disk does the memory image go to?  How does
the "savecore" program find that information before the mirroring software
overwrites it as it doesn't match the other drive?  Which drive is the dirty
one?  If your system panics due to a kernel bug, you may have to un-mirror
swap just to get the information necessary to the Sun engineer for the
finding of the bug.  If your system is stable, as 90% of Solaris 2.5.1
systems are, then you should not have this problem.

--
Michael G. Beirne | 1509 W. Oakdale 1st, Chicago,IL 60657-4010, (773)348-8438


 
 
 
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mirroring root on sol2.5.1

Post by Tony Caddie » Tue, 01 Jul 1997 04:00:00



>  Hello out there. I am contemplating a mirrored root disk setup on
>  my UE3000 server. We have not installed any volume manager on the system
> yet...however we do have  the bundled in ODS?SDS 4.0. So my question is this,
> which way should we go to quickly and easily mirror root and setup for
>  mirrored root booting? We want good redundancy and also want to use
> the VM for other tasks. However we are not sure wether to go with whats Free
> or pay extra and get Verias. What would you all recommend? I have used
> veritas on a sparc array before and liked it....

>  thanks,

> -chris

Chris,

I have used both SODS and Veritas and my personal opinion is that while
they are
set up differently, once they are in place you don't really need to do
much with
them.  I set up a machine with SODS about 4 months ago and have not
needed to do
anything more since.  If there is some extra special reason why you feel
you might
benefit from Veritas then use that, but it seems to me that you are
pretty
ambivalent.  Why spend money that you don't need to.  As always just
remember to
avoid RAID 5 and you'll be fine.

Cheers

Tony

 
 
 
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mirroring root on sol2.5.1

Post by Vivek Khindr » Fri, 04 Jul 1997 04:00:00


If this system has a Sparc Storage Array (or will be getting on), a VM
license comes with it, so I would recc using VM to mirror your boot
disk.   Otherwise ODS works too.

Vivek Khindria

[ Hello out there. I am contemplating a mirrored root disk setup on
[ my UE3000 server. We have not installed any volume manager on the
system
[yet...however we do have  the bundled in ODS?SDS 4.0. So my question
is this,
[which way should we go to quickly and easily mirror root and setup
for
[ mirrored root booting? We want good redundancy and also want to use
[the VM for other tasks. However we are not sure wether to go with
whats Free
[or pay extra and get Verias. What would you all recommend? I have
used
[veritas on a sparc array before and liked it....

[ thanks,

[-chris

 
 
 
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1. telnet no longer works well after sol2.4 to sol2.5.1 upgrade

I just returned from a trip to install the 2.5.1 u[grad eto my sun sparc5
and thought I'd run this by you kind folks. I have several pc's running
win3.x and pcnfs-pro using telnet to the sun. I run some applications
this way one of which is called Uniplex (kindof an office suite) the
other is custom stuff. Both of these worked fine before the upgrade but
now the screens do not refresh and the next menu is displayed on top of
the previous. This is also a problem with a serial terminal and just
doing a telnet to the host itself so the problem is not with the pc end
of things the problem is the new upgrade. I worked around this by using
rlogin instead but my users want their old way of doing things back.

Thanks in advance for any assistance
Tony R. Diller

2. NFS Speed with linux

3. sol2.5.1 buggier than sol2.4

4. fsck fsck say I

5. Help: Samba2.03 under Sol2.5.1

6. problem with SQUID start

7. Virtual Host under sol2.5.1

8. IP Security: bos.net.ipsec.rte - how to deny TELNET?

9. Warning: sol2.5.1 password bug

10. 3C589D not recognized on Toshiba 740CDT w/ Sol2.5.1 x86

11. Jaz drive under Sol2.5.1 x86

12. Adding several printers under Sol2.5.1.

13. SPAM, sendmail relaying, etc. under Sol2.5.1


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