We have 2 F840's in production along side 12 F760's. The big "gotcha" for us is that you cannot volcopy or Snapmirror between 5.3.6H1 and the F760 5.3.6 O/S - really not so good in our case as I would love to use volcopy to migrate from the F760 to the F840. These things scream, but its early to compare as our load ramps up. One piece of reality-versus-engineering-claims relates to disk scrubbing. We turned off disk scrub on the F760's because it really impacted user file access. I was told this issue would no longer be a problem. Well, it takes the F840's, each with 12 shelves of 36 gig drives, from 1AM to 2PM (yes, 2 PM) to scrub under very light load. Another piece of folklore I guess.
-----Original Message----- From: Todd C. Merrill [mailto:tmerrill@mathworks.com] Sent: Monday, September 25, 2000 4:39 PM To: toasters@mathworks.com Subject: Re: F840
Okay, so it appears as if the F840 runs ONTAP 5.3.6H1, and the "Start Here" documentation says (p. 10) that "This release runs only on F840 filers."
Hmmm... Hmmmm.... Uh-oh.
There is no common release that will run on the F760's I already have, so I can test how things go there first before putting this champagne beauty through its paces?
Plus, it's not clear (and I think I know the answer to this) how one might take the root volume on a shelf/shelves from an F760 to an F840. If I can't install 5.3.6H1 on an F760.... And, I assume the alpha boot code on my existing F760's won't boot the new F840's...
Answer: Catch-22!
That puts me into a pickle. "I don't want a pickle; I just wanna ride on my motorsickle..."
I'm gonna continue digging through NOW and the docs, but if anyone can respond to me before I give a call into our VAR or NetApp support tomorrow... <help>
(Man, that NVRAM battery is *big*!)
Until next time...
The Mathworks, Inc. 508-647-7000 x7792 3 Apple Hill Drive, Natick, MA 01760-2098 508-647-7001 FAX tmerrill@mathworks.com http://www.mathworks.com ---
One piece of reality-versus-engineering-claims relates to disk scrubbing. We turned
off
disk scrub on the F760's because it really impacted user file access. I
was
told this issue would no longer be a problem. Well, it takes the F840's, each with 12 shelves of 36 gig drives, from 1AM to 2PM (yes, 2 PM) to
scrub
under very light load.
And the impact on performance was?
And your scrub speed was set to?
Another piece of folklore I guess.
What folklore? It's not clear from the text that the engineering claim was wrong.
Bruce
We have 2 F840's in production along side 12 F760's. The big "gotcha" for us is that you cannot volcopy or Snapmirror between 5.3.6H1 and the F760 5.3.6 O/S - really not so good in our case as I would love to use volcopy to migrate from the F760 to the F840. These things scream, but its early to compare as our load ramps up. One piece of reality-versus-engineering-claims relates to disk scrubbing. We turned off disk scrub on the F760's because it really impacted user file access. I was told this issue would no longer be a problem. Well, it takes the F840's, each with 12 shelves of 36 gig drives, from 1AM to 2PM (yes, 2 PM) to scrub under very light load. Another piece of folklore I guess.
I would really like to hear where you heard that you cannot snapmirror or vol copy between 5.3.6H1 and 5.3.6. This should work just fine and we do different variations of this internally to netapp. Please let me know where you heard this so that I can find out why this rumor started and hopefully stop it from being propagated.
If it really didn't work, I would expect a bug to have been filed and I haven't seem one complaining about this situation.
Mike Federwisch Network Appliance Inc.
Ok, I just talked to the parties involved. It seems as though there must have been a miscommunication. This configuration should have no problems. Volcopy and snapmirror should work between 5.3.6H1 and 5.3.6.
Mike Federwisch
We have 2 F840's in production along side 12 F760's. The big "gotcha" for us is that you cannot volcopy or Snapmirror between 5.3.6H1 and the F760 5.3.6 O/S - really not so good in our case as I would love to use volcopy to migrate from the F760 to the F840. These things scream, but its early to compare as our load ramps up. One piece of reality-versus-engineering-claims relates to disk scrubbing. We turned off disk scrub on the F760's because it really impacted user file access. I was told this issue would no longer be a problem. Well, it takes the F840's, each with 12 shelves of 36 gig drives, from 1AM to 2PM (yes, 2 PM) to scrub under very light load. Another piece of folklore I guess.
-----Original Message----- From: Todd C. Merrill [mailto:tmerrill@mathworks.com] Sent: Monday, September 25, 2000 4:39 PM To: toasters@mathworks.com Subject: Re: F840
Okay, so it appears as if the F840 runs ONTAP 5.3.6H1, and the "Start Here" documentation says (p. 10) that "This release runs only on F840 filers."
Hmmm... Hmmmm.... Uh-oh.
There is no common release that will run on the F760's I already have, so I can test how things go there first before putting this champagne beauty through its paces?
Plus, it's not clear (and I think I know the answer to this) how one might take the root volume on a shelf/shelves from an F760 to an F840. If I can't install 5.3.6H1 on an F760.... And, I assume the alpha boot code on my existing F760's won't boot the new F840's...
Answer: Catch-22!
That puts me into a pickle. "I don't want a pickle; I just wanna ride on my motorsickle..."
I'm gonna continue digging through NOW and the docs, but if anyone can respond to me before I give a call into our VAR or NetApp support tomorrow... <help>
(Man, that NVRAM battery is *big*!)
Until next time...
The Mathworks, Inc. 508-647-7000 x7792 3 Apple Hill Drive, Natick, MA 01760-2098 508-647-7001 FAX tmerrill@mathworks.com http://www.mathworks.com
-
Bruce Sterling Woodcock -
Mike Federwisch -
Sam Schorr