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Solaris Online volume growth with HP EVA 8100

Posted on 2008-06-22
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I need to know if it is possible to extend the capacity of volumes presented from an HP EVA8100 to a Solaris 10 host.

If it is possible, i need to know if additional software is needed, or it can be done with operating system included features. If additional software is needed i need to know which one and if there are options of free software available.
I would also like to know about the exact procedure of extending volumes without the need to restart any service (online).

So, i need to know everything possible about what to do in the operating system host after i have extended a LUN in HP EVA Storage.

Thank you!
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Question by:llandajuela
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7 Comments
 
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Expert Comment

by:Duncan Meyers
ID: 21844920
Yes it is, but the dependency is on the file system you choose. ZFS will grow - no problem. Other Solaris file systems are not so accommodating, so choose with care.
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Expert Comment

by:Duncan Meyers
ID: 21844948
This is a good place to start: http://docs.sun.com/app/docs/doc/819-5461
And there's a good overview here: http://foss.in/2005/slides/foss-zfs.pdf
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Author Comment

by:llandajuela
ID: 21845052
meyersd,

thanks for your answer.

I need to write a report about these capabilities, and ive never seen a Solaris in my life (yes, don't ask why i have to do this). Sorry if my questions are not clear enough.

Is ZFS filesystem the only one available in the most recent verions? Is any additional software needed?

I have read about Solaris Volume Manager, is this tool available with OS? with no extra cost? Would this be the tool to use to perform an expansion?

Thanks again



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Duncan Meyers earned 2000 total points
ID: 21845183
>ive never seen a Solaris in my life (yes, don't ask why i have to do this).
You have my sympathies - that's never fun, is it?

>Is ZFS filesystem the only one available in the most recent verions? Is any additional software needed?
There are other options such as Veritas File System (VxFS) and so on. One of the big complaints for years was that the native Solaris file systems were not expandable without either grubby hacks where you had to edit the partition's magic number (like a partition table), or having to migrate data off onto another disc, destroy the partition, create a new, bigger partition, then move the data back. But, hooray! ZFS is here. ZFS is included with Solaris 10 - so you've already got it. No more software needed.

IIRC, Solaris Volume Manager is a tool for volume management - it's older and has been superseded by ZFS. ZFS rocks!

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Author Closing Comment

by:llandajuela
ID: 31469700
Thanks for the help!

You've been very helpful!

Once last question: Was the expansion possible with Solaris Volume Manager? Ive read it was available since Solaris 9, is that right?

So, if i understood correctly.

If you have Solaris 9, you will use Solaris Volume manager to expand volumes online.
If you have Solaris 10, you will use ZFS to expand volumes online.

Have i understood ok?

Thanks again
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Author Comment

by:llandajuela
ID: 21845315
My last comment should have been an extra comment, not a grading comment.

Sorry
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Expert Comment

by:Duncan Meyers
ID: 21845521
Thanks. Glad I could help!

>If you have Solaris 9, you will use Solaris Volume manager to expand volumes online.
Depends entirely on which underlying file system is used so maybe yes, maybe no. But yes, Solaris Volume Manager was used for Solaris 9 and earlier. ZFS was only released in Solaris 10.

>If you have Solaris 10, you will use ZFS to expand volumes online.
Yes. No problem at all. Works brilliantly.
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