jeremy.page at gilbarco
Feb 9, 2010, 6:14 PM
Post #3 of 3
(1678 views)
Permalink
|
It can be pretty signifigant, it's not as well documented as VMDK
misalignment but I'd expect similar numbers.
It looks like the Solaris configuration shouldn't be an issue, it's got
a larger offset but still aligned the same way as an AIX LUN.
________________________________
From: MRWILLIS [at] UP [mailto:MRWILLIS [at] UP]
Sent: Wednesday, February 03, 2010 10:49 PM
To: Roach, Steven; Page, Jeremy; toasters
Subject: Re: Changing a LUN type
Anyone ever get an IO performance delta on the misalignment created
between the file system and the LUN? I suppose it would depend on the
amount of IO, but just curious. Thanks.
________________________________
From: "Roach, Steven" [Steven.Roach [at] netapp]
Sent: 02/03/2010 10:07 PM EST
To: "Page, Jeremy" <jeremy.page [at] gilbarco>;
<toasters [at] mathworks>
Subject: Re: Changing a LUN type
Jeremy,
The LUN type setup up characteristics for that LUN like On-Disk Layout,
while this may be working for you, you might not have optimal
performance.
Once it is created, I don't think you can change the LUN type, you would
have to create a new one (same size) with the correct LUN type and copy
over the data.
On 2/3/10 9:22 PM, "Page, Jeremy" <jeremy.page [at] gilbarco> wrote:
I am probably missing something simple but I have an AIX system
running off a LUN that's configured for a Solaris box. I have two
questions -
*What's the impact? Are they essentially the same or is there a
difference between the two that's going to cause me grief
*How do I change it?
Any suggestions would be much appreciated.
Please be advised that this email may contain confidential
information.
If you are not the intended recipient, please do not read, copy
or
re-transmit this email. If you have received this email in
error,
please notify us by email by replying to the sender and by
telephone
(call us collect at +1 202-828-0850) and delete this message and
any
attachments. Thank you in advance for your cooperation and
assistance.
In addition, Danaher and its subsidiaries disclaim that the
content of
this email constitutes an offer to enter into, or the acceptance
of,
any
contract or agreement or any amendment thereto; provided that
the
foregoing disclaimer does not invalidate the binding effect of
any
digital or other electronic reproduction of a manual signature
that is
included in any attachment to this email.
**
This message and any attachments contain information from Union Pacific
which may be confidential and/or privileged. If you are not the intended
recipient, be aware that any disclosure, copying, distribution or use of
the contents of this message is strictly prohibited by law. If you
receive this message in error, please contact the sender immediately and
delete the message and any attachments.
**
Please be advised that this email may contain confidential information.
If you are not the intended recipient, please do not read, copy or
re-transmit this email. If you have received this email in error,
please notify us by email by replying to the sender and by telephone
(call us collect at +1 202-828-0850) and delete this message and any
attachments. Thank you in advance for your cooperation and assistance.
In addition, Danaher and its subsidiaries disclaim that the content of
this email constitutes an offer to enter into, or the acceptance of,
any
contract or agreement or any amendment thereto; provided that the
foregoing disclaimer does not invalidate the binding effect of any
digital or other electronic reproduction of a manual signature that is
included in any attachment to this email.
|
