10g RAC using SAN for storage

#1

I am testing a 2 node RAC setup and want to try using a SAN for the
dedicated storage (instead of a dedicated local storage disk array
located within the same frame).

Are there any "gotchas" that I should be aware of when using the SAN
for storage as opposed to a typical storage array?

Thanks!

#2

macdba321 wrote:

Quote:

I am testing a 2 node RAC setup and want to try using a SAN for the
dedicated storage (instead of a dedicated local storage disk array
located within the same frame).

Are there any "gotchas" that I should be aware of when using the SAN
for storage as opposed to a typical storage array?

Thanks!

How did you use "dedicated local storage disk" and make it shared
everything?

You've said nothing of CFS or ASM or RAW. Why?

The biggest potential issue with a SAN is labeling the disks used
for the voting disk and OCR so that they are mounted in the correct
order by the O/S.
--
Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington
damorgan@x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org

#3

macdba321 wrote:

Quote:

I am testing a 2 node RAC setup and want to try using a SAN for the
dedicated storage (instead of a dedicated local storage disk array
located within the same frame).

Are there any "gotchas" that I should be aware of when using the SAN
for storage as opposed to a typical storage array?

Thanks!

How did you use "dedicated local storage disk" and make it shared
everything?

You've said nothing of CFS or ASM or RAW. Why?

The biggest potential issue with a SAN is labeling the disks used
for the voting disk and OCR so that they are mounted in the correct
order by the O/S.
--
Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington
damorgan@x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org

#4

macdba321 wrote:

Quote:

I am testing a 2 node RAC setup and want to try using a SAN for the
dedicated storage (instead of a dedicated local storage disk array
located within the same frame).

Are there any "gotchas" that I should be aware of when using the SAN
for storage as opposed to a typical storage array?

Thanks!

How did you use "dedicated local storage disk" and make it shared
everything?

You've said nothing of CFS or ASM or RAW. Why?

The biggest potential issue with a SAN is labeling the disks used
for the voting disk and OCR so that they are mounted in the correct
order by the O/S.
--
Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington
damorgan@x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org

#5

macdba321 wrote:

Quote:

I am testing a 2 node RAC setup and want to try using a SAN for the
dedicated storage (instead of a dedicated local storage disk array
located within the same frame).

Are there any "gotchas" that I should be aware of when using the SAN
for storage as opposed to a typical storage array?

Thanks!

How did you use "dedicated local storage disk" and make it shared
everything?

You've said nothing of CFS or ASM or RAW. Why?

The biggest potential issue with a SAN is labeling the disks used
for the voting disk and OCR so that they are mounted in the correct
order by the O/S.
--
Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington
damorgan@x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org

#6

On Sep 12, 9:35*am, DA Morgan <damor... (AT) psoug (DOT) org> wrote:

Quote:

macdba321 wrote:
I am testing a 2 node RAC setup and want to try using a SAN for the
dedicated storage (instead of a dedicated local storage disk array
located within the same frame).

Are there any "gotchas" that I should be aware of when using the SAN
for storage as opposed to a typical storage array?

Thanks!

How did you use "dedicated local storage disk" and make it shared
everything?

You've said nothing of CFS or ASM or RAW. Why?

The biggest potential issue with a SAN is labeling the disks used
for the voting disk and OCR so that they are mounted in the correct
order by the O/S.
--
Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington
damor...@x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Groupwww.psoug.org

Thanks for the reply.

I plan to use ASM over raw devices. (Again, this is purely for test/
learning, not a production application.)

Please correct me if I'm wrong, but I'm assuming that I'll need HBAs
for both nodes to connect to the same LUNs on the SAN? (There's no way
to do it without the HBA is there?)

Thanks.

#7

On Sep 12, 9:35*am, DA Morgan <damor... (AT) psoug (DOT) org> wrote:

Quote:

macdba321 wrote:
I am testing a 2 node RAC setup and want to try using a SAN for the
dedicated storage (instead of a dedicated local storage disk array
located within the same frame).

Are there any "gotchas" that I should be aware of when using the SAN
for storage as opposed to a typical storage array?

Thanks!

How did you use "dedicated local storage disk" and make it shared
everything?

You've said nothing of CFS or ASM or RAW. Why?

The biggest potential issue with a SAN is labeling the disks used
for the voting disk and OCR so that they are mounted in the correct
order by the O/S.
--
Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington
damor...@x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Groupwww.psoug.org

Thanks for the reply.

I plan to use ASM over raw devices. (Again, this is purely for test/
learning, not a production application.)

Please correct me if I'm wrong, but I'm assuming that I'll need HBAs
for both nodes to connect to the same LUNs on the SAN? (There's no way
to do it without the HBA is there?)

Thanks.

#8

On Sep 12, 9:35*am, DA Morgan <damor... (AT) psoug (DOT) org> wrote:

Quote:

macdba321 wrote:
I am testing a 2 node RAC setup and want to try using a SAN for the
dedicated storage (instead of a dedicated local storage disk array
located within the same frame).

Are there any "gotchas" that I should be aware of when using the SAN
for storage as opposed to a typical storage array?

Thanks!

How did you use "dedicated local storage disk" and make it shared
everything?

You've said nothing of CFS or ASM or RAW. Why?

The biggest potential issue with a SAN is labeling the disks used
for the voting disk and OCR so that they are mounted in the correct
order by the O/S.
--
Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington
damor...@x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Groupwww.psoug.org

Thanks for the reply.

I plan to use ASM over raw devices. (Again, this is purely for test/
learning, not a production application.)

Please correct me if I'm wrong, but I'm assuming that I'll need HBAs
for both nodes to connect to the same LUNs on the SAN? (There's no way
to do it without the HBA is there?)

Thanks.

#9

On Sep 12, 9:35*am, DA Morgan <damor... (AT) psoug (DOT) org> wrote:

Quote:

macdba321 wrote:
I am testing a 2 node RAC setup and want to try using a SAN for the
dedicated storage (instead of a dedicated local storage disk array
located within the same frame).

Are there any "gotchas" that I should be aware of when using the SAN
for storage as opposed to a typical storage array?

Thanks!

How did you use "dedicated local storage disk" and make it shared
everything?

You've said nothing of CFS or ASM or RAW. Why?

The biggest potential issue with a SAN is labeling the disks used
for the voting disk and OCR so that they are mounted in the correct
order by the O/S.
--
Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington
damor...@x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Groupwww.psoug.org

Thanks for the reply.

I plan to use ASM over raw devices. (Again, this is purely for test/
learning, not a production application.)

Please correct me if I'm wrong, but I'm assuming that I'll need HBAs
for both nodes to connect to the same LUNs on the SAN? (There's no way
to do it without the HBA is there?)

Thanks.

#10

macdba321 wrote:

Quote:

On Sep 12, 9:35 am, DA Morgan <damor... (AT) psoug (DOT) org> wrote:
macdba321 wrote:
I am testing a 2 node RAC setup and want to try using a SAN for the
dedicated storage (instead of a dedicated local storage disk array
located within the same frame).
Are there any "gotchas" that I should be aware of when using the SAN
for storage as opposed to a typical storage array?
Thanks!
How did you use "dedicated local storage disk" and make it shared
everything?

You've said nothing of CFS or ASM or RAW. Why?

The biggest potential issue with a SAN is labeling the disks used
for the voting disk and OCR so that they are mounted in the correct
order by the O/S.
--
Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington
damor...@x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Groupwww.psoug.org

Thanks for the reply.

I plan to use ASM over raw devices. (Again, this is purely for test/
learning, not a production application.)

Please correct me if I'm wrong, but I'm assuming that I'll need HBAs
for both nodes to connect to the same LUNs on the SAN? (There's no way
to do it without the HBA is there?)

Thanks.

Not with a SAN unless you have an antique with fibre protocol over
copper and can find drivers for it. Another possibility is to use
iSCSI drivers.
--
Daniel A. Morgan
Oracle Ace Director & Instructor
University of Washington
damorgan@x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org