toasters

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13529 discussions

spinning spares..
by kevin graham 02 Apr '02

02 Apr '02

Does anyone know if OnTAP spins down spares? IIRC, when I've pulled spares in the past, they were definately spinning. I can't say for sure why this is bothering me, but it would seem that leaving them idle would be a good thing.. From looking at specs, even older drives will be ready in NLT 20s, which isn't enough to seriously impact rebuild times, and the drive is still available for non-media access commands, so it seems like an all 'round good idea.. Is there something I'm overlooking, or is this completely inconsequential in the grand scheme of things? ..kg..

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qtree
by pkeim(contr-ird) 02 Apr '02

02 Apr '02

Is there a way to quickly determine the amount of disk space consumed by each qtrees without having to use Windows Explorer? We don't have quotas enabled, so I can't use "quota report". We have an F840 with 6.1.2R1 (I have a feeling I'm going to regret asking this because the answer is so easy, but I can't find it!)

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RE: adding different drive sizes to an existing volume
by Joe Luchtenberg 02 Apr '02

02 Apr '02

This exceeds the max capacity of the F740. You could get away with 3x FC9 shelves with 36GB drives and 2x shelves with 18GB drives. See http://now.netapp.com/NOW/knowledge/docs/hardware/NetApp/syscfg/scdot612/ind ex.htm. Joe Joe Luchtenberg Dataline, Inc. Email: joe.luchtenberg(a)data-line.com Phone: 757-457-0504 (direct line) 757-858-0600 (front desk) 757-285-1223 (mobile) Fax: 757-858-0606 Please visit us at www.data-line.com > -----Original Message----- > From: Eric Hester [mailto:erich@nuvox.net] > Sent: Tuesday, April 02, 2002 11:36 AM > To: toasters(a)mathworks.com > Subject: adding different drive sizes to an existing volume > > > I have an F740 with 3 FC9 shelves loaded with 18gig drives. > I have 3 FC9 shelves loaded with 36gig drives from another > netapp I want > to move to the F740. > > If I add these drives to an existing volume but make them > their own raid > group, and leave one 36gig spare, that will not cause me any heartache > will it? > > -- > Eric Hester > Director of Systems Engineering > NuVox Communications, Inc. > 864.331.8171 eric(a)nuvox.net >

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adding different drive sizes to an existing volume
by Eric Hester 02 Apr '02

02 Apr '02

I have an F740 with 3 FC9 shelves loaded with 18gig drives. I have 3 FC9 shelves loaded with 36gig drives from another netapp I want to move to the F740. If I add these drives to an existing volume but make them their own raid group, and leave one 36gig spare, that will not cause me any heartache will it? -- Eric Hester Director of Systems Engineering NuVox Communications, Inc. 864.331.8171 eric(a)nuvox.net

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NTP not working
by Frank Bonnet 02 Apr '02

02 Apr '02

Hi I'm still in trouble wit a F85 running 6.1.1R2 the clock is getting late ( about 20 mins a week ) I have to reset it manually to correct the local time of the filer. Is this a known Ontap bug or is it a hardware problem ? NTP is on but it doesn't seems to works well as all our UNIX machines are NTP sync with success on the same NTP server ... Thanks for any help.

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FLOW CONTROL
by Noll, Kevin 02 Apr '02

02 Apr '02

Hi All We are standardized with Sun and Cisco equipment. All equipment on our Database Vlans are using Gig Ethernet. Flow control on our sun servers are set to on. However, on our Cisco Switches, the settings are as follows. set port flowcontrol 2/1-12 send desired set port flowcontrol 2/1-12 receive off I am not a cisco engineer, but would like to know if this is correct. I believe it should be both on. What type of throughput should you see of a file copy over gig ethernet? Thanks KEVIN NOLL ******************************************************************************************** " This message contains information that may be privileged or confidential and is the property of the Cap Gemini Ernst & Young Group. It is intended only for the person to whom it is addressed. If you are not the intended recipient, you are not authorized to read, print, retain, copy, disseminate, distribute, or use this message or any part thereof. If you receive this message in error, please notify the sender immediately and delete all copies of this message ". ********************************************************************************************

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SNMP Failure Detection
by Ben Rockwood 31 Mar '02

31 Mar '02

Hello Toasters. I've been using a script to monitor disk failures on our filers. It's worked pretty well in the past, but I've hit a snag today... Normally I can tell if a disk has failed in one of two ways: 1) Check the SNMP "disks.failed" value, if !eq 1, we've got a problem. 2) Check via SNMP, the total number of disks, then check the number of active disks, and add to it the number of spare disks. If total disks !eq to active plus spare disk, then there is a failure. The second method is often needed for the failures that "slip through the cracks", and is sufficent. However today a disk failed and in doing so was removed from the TOTAL disk count, and not added as a failed disk, so in a case where I have 84 disks, I get the following output from my script: The global message is: "The system's global status is normal. " Total disk count is: 83 The Active Disk Count is: 82 The Spare Disk Count is: 1 The Failed Disk Count is: 0 I've omitted the non-relevent output from my script, which does simple snmpget's from the Net-SNMP app. Anyway, three things went wrong here, the global message doesn't reflect a failure. The total disk count was decremented when it should not have and the failed disk count is still eq to zero. Now, because I know that all our filers should always have 2 spare disks I can rewrite my scripts to look for this, however I had previously written them in a very portable way, which hardcoding the number of spares to look for will degridate... Any ideas why this happens? I'm sure I'm not the only one who's seen this. Ben Rockwood brockwood(a)homestead-inc.com

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RE: Cluster licenses -- what if I break the cluster will they sti ll w ork?
by Art Hebert 31 Mar '02

31 Mar '02

I did a 100MB copy clustered and non clustered and I saw a 15% hit due to having to copy the nvram. But the clustering is very valuable, I just showed our ceo how it works and he was quite happy. He was in helping us do some computer room work. art -----Original Message----- From: kevin graham [mailto:kgraham@dotnetdotcom.org] Sent: Tuesday, March 26, 2002 8:44 PM To: Art Hebert Cc: 'toasters(a)mathworks.com' Subject: RE: Cluster licenses -- what if I break the cluster will they sti ll w ork? > I thought the license keys were different for every machine. Are you saying > I can use the license key for one machine on another. Aren't they tied to > serialnumbers? AFAIK, no. > Anybody else out there with a cluster, what does is listed when you run > license on each head? Now that I look, both heads of my cluster have the same license keys. I'm not sure if that's intentional, or the same lazy case mentioned previously. Ugh. > I figure we will get a 15% improvement in performance if I break the > heads. How much performance improvement have people seen when they have > moved from 100mb to gig? Haven't had a chance to compare them side to side, but the gige's are preferable even for equivalent traffic given some of the extras, such as checksum offloading, jumbo framing (if you can use it) and interrupt coalescing. Where are you extracting the 15% number though? (and how is the 100:1000mb related?) ..kg..

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RE: Vol/qtree/dir/file snapshots (was Re: DataONTAP 6.2) ORACLE DATABASES
by Melvin, Grant 31 Mar '02

31 Mar '02

Hi Kevin, > We have multiple Oracle Databases of different sizes. > However, most of our databases are around 20 - 30 gigs. You might want to consider having each database be in its own 20 - 30GB qtree within a single volume. That way you can SnapMirror each qtree on an individual schedule, make multiple copies of the most critical databases to different locations or even backup to a NearStore R100 using SnapVault for later tape backup, etc. Obviously this means that you wouldn't use Volume based SnapRestore if you have more than one database per volume, but you could use Single File based SnapRestore within a single qtree. Unfortunately, we don't have directory or qtree based SnapRestore, as pointed out earlier, but you could possibly use a perl script (perhaps check on NOW) to perform the directory or qtree restoration. The database files would be restored without copying the data, but new inodes are created to reference the files in the active filesystem. > All my problems would be resolved if we could justify the > use and waste of so many disks. I wonder, having multiple > small databases on the same volume with qtree snapshots > would be something of the future. Or maybe not. Any > recommendations would be appreciated. I hope the above helps with your disk usage. I don't know your system intimately, but I'd expect that you could easily have a dozen or so databases per volume with Data ONTAP 6.2. For more info on SnapMirror, SnapVault and SnapRestore, etc. Check out the web page at: http://www.netapp.com/solutions/continuity Cheers, Grant For information on NetApp's Data Protection Solutions view http://www.netapp.com/solutions/data_protection.html. =========== grant(a)netapp.com ========== Grant Melvin === === Software Development Manager === === Data Availability & Management === |\ | __ ___ /\ __ __ === Network Appliance === | \ | |__ | /__\ |__| |__| === 475 East Java Drive === | \| |__ | / \ | | (R) === Sunnyvale === === California, 94089 === === Tel:(408)822-6761 =========== Network Appliance ========== Fax:(408)822-4578

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VLD drive for UNIX
by Uros Lampret 31 Mar '02

31 Mar '02

Hi! I know there is Virtual Local Drive software called SnapDrive for Win NT and 2000. Is there similar software to do this on UNIX. I have an aplication that don't want to run from NFS mount. I need to mount this in the way that OS will see it as local drive. I use IBM AIX. Best regards, Uros _____________________________

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toasters