toasters January 2013

toasters@lists.teaparty.net

45 participants
23 discussions

Where does the "125L" come fromin diskname 0c.125L72 (when using ATTO FC-to-SAS bridges)
by Filip Sneppe 10 Jan '13

10 Jan '13

Hi, This is perhaps a bit of a silly question, but a customer of ours asked this , and I am not able to provide him with a full answer. On a FAS system with ATTO FC-to-SAS bridges, a disk is identified by a name like this 0c.125L72. On a V-series system, you may encounter disks names such as "fcswitchname:17.126L31". This link: https://library.netapp.com/ecmdocs/ECMP1147535/html/GUID-6F23FBA1-07DC-4CF1… explains the 125L and 126L are device IDs, but can anyone give me a little more information on what they represent, how they are set etc. Thanks in advance, Filip

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Latency reporting
by Peta Thames 04 Jan '13

04 Jan '13

Hi and happy new year to you all! My first conundrum of 2013... Anyone got any ideas on how I get the amount of time in any given time period that overall FCP read/write latency has been above a certain threshold? The threshold is already set in perf advisor and has been for some time. I have the usual free opsmanager tools to hand, plus Balance. I know there are other performance metrics I can and do look at, however for this report I have very explicitly been asked to find something that can be expressed as a percentage, and so far this is the best I can come up with (% of time in a month spent over the threshold). Any other ideas would be welcome though. Thanks, Peta

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BURT 519766 panic on production 3270
by Fletcher Cocquyt 02 Jan '13

02 Jan '13

Happy 2013! One of our production 3270 heads panic'ed and rebooted 3:30 am Dec 25 - lump of coal ? The good news is, when our system panic'ed and rebooted, the failover performed as expected so we had only a 2 second timeout logged on our ESXi hosts, Oracle - no downtime. There is scarce public info on this issue and Netapp is recommending options from "do nothing - (its rare and may never happen again)" to "replace motherboards and all cards" Our 3270 clusters (we have 2 in Active:Standby mode) have been stable since we installed them in Feb 2011. We are on 8.1GA - Netapp support says the issue is independent of OnTAP version. Anyone else encountered this issue? What was your action and outcome? thanks, Fletcher Cocquyt Stanford University School of Medicine

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toasters January 2013