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13520 discussions

Re: Disk-to-disk backups? (was Re: Need new backup solution)
by tkaczma＠gryf.net 17 Apr '00

17 Apr '00

On Thu, 13 Apr 2000, Fred Ab wrote: > If your place burns down you are not just down but out of > business. Tapes are tangible and can be stored offsite. Disks are this way as well. Tom > > ===}From: Bennett Todd <bet(a)rahul.net> > ===}To: toasters(a)mathworks.com > ===}Subject: Disk-to-disk backups? (was Re: Need new backup solution) > ===}Date: Thu, 13 Apr 2000 13:13:15 -0700 > ===}Mime-Version: 1.0 > ===} > ===}I'm curious about something here. > ===} > ===}First, some background. I recently set up a backup system I really, > ===}really like. It's on a Linux fileserver, no netapps in this > ===}picture. It's backing up c. 60GB of disk, a single root drive and a > ===}50GB RAID-5 with a hot spare, to another RAID-5 set, about 130GB, > ===}with no hot spare. I have a cronjob set to email me if a drive drops > ===}out of the set. I backup with a script that replicates all the > ===}data to be saved onto the backup raid set, using rsync, with the > ===}--backup-dir option to save anything that's been changed or deleted; > ===}then it takes all those changed-or-deleted files and bzip2s them > ===}into timestamped archives. When the backup partition gets over > ===}90% full it commences deleting those bzip2-ed archives, starting > ===}with the oldest, until it's back down under 80% full. This gives me > ===}months of coverage and I never have to change a tape, and the cost > ===}of the drives is less than the cost of a suitable capacity tape > ===}drive to back up 60GB of data. > ===} > ===}So anyway, enough with background, the question is, how come I don't > ===}hear anyone advocating using Netapp's snapshots as a backup > ===}strategy? Netapps don't lose data; it's not like WAFL or Netapp's > ===}RAID or any other bits are so bug-ridden that they don't do their > ===}job. > ===} > ===}And you can buy a _Load_ of drives for what a heavy-duty > ===}industrial-strength DLT jukebox costs. Especially when you factor > ===}in the setup time, and the re-setup time every time it breaks. The > ===}Exabyte 8200 was the only tape drive I ever set up that didn't die > ===}before I switched jobs; seems like MTBF for a drive writing a tape > ===}a day is well under a year, at least in my experience in the last 6 > ===}years or so. Bleech. > ===} > ===}-Bennett >

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RE: Ontap 5.4
by Reidenbach, Edward 17 Apr '00

17 Apr '00

Jay, Please contact your local Sales Rep for any questions on future products. Thanks On a general note, we will test and qualify new software releases running on discontinued hardware for a period of 2 years after hardware End of Availability date. We have recently decided on the following clarification for software support if the hardware has met the 2 year period: Software support for hardware surpassing the 2 year period will not be phased out in Data ONTAP Maintenance releases. (i.e. x.x.x). We will phase out support in Major Data ONTAP releases (x.x). Thus, the F220, F330, and F540 products (which have a 4/30/00 End of Software Support) will be supported in the Data ONTAP 5.3.x Maintenance Releases. This effectively extends software support until we stop creating maintenance releases for 5.3.x. Ed Reidenbach Mgr, Data ONTAP and High Availability -----Original Message----- From: Jay Orr [mailto:orrjl@stl.nexen.com] Sent: Friday, April 14, 2000 1:42 PM To: toasters(a)mathworks.com Subject: Ontap 5.4 Any word if ontap 5.4 will be out this month? The reason I ask is Netapp told us they are discontinuing software support at the end of this month because the F330's were declared EOL a year ago. However, last I had talked to anyone about this it was believed that 5.4 would be out before they discontinued software support. What is the plans for ontap versions and F330 and support? Anyone know? ----------- Jay Orr Systems Administrator Fujitsu Nexion Inc. St. Louis, MO

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RE: NetApp F7XX + Snapmirror
by Melvin, Grant 17 Apr '00

17 Apr '00

FYI, > > Now when I look to use SNAPMIRROR to mirror from "A" filer > to "B" filer, I can do it by volumes only. Am I correct in > ASSuM(E)ing that if I mirror "vol0" I'll clobber the > configuration of "B" filer? > We have an "Operational Guide" for SnapMirror on NOW at: http://now.netapp.com/NOW/knowledge/docs/olio/guides/TR3073.shtml Hope this helps. Cheers, Grant

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Cifs.max_mpx
by ZANGA, Michael, GCM 17 Apr '00

17 Apr '00

Does anyone have any idea what the option cifs.max_mpx does. On a whitepaper from NetApp the option is referenced to be changed to 1124. I presently have it set at 32 and it was hidden. I am reluctant to make the change without knowing what it does. ********************************************************************** This e-mail is intended only for the addressee named above. As this e-mail may contain confidential or privileged information, if you are not the named addressee, you are not authorised to retain, read, copy or disseminate this message or any part of it. ************************************************************************

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RE: Cifs.max_mpx
by Hawley, Rob 17 Apr '00

17 Apr '00

Cifs.max_mpx tells the client how many operations can be pending on the filer at the same time. The value should never be set below the NT default of 50 (some early versions of 5.3 set it to 32 which was incorrect). If cifs stat shows Max Multiplex greater than about 32 you need to raise this number. The two engineering approved increases are 253 and 1124. Do not set this to any other values without an explicit conversation with NetApp customer service. One way you can tell how much is enough is to run perfmon on the client consuming the most resources and look at the Redirector\current commands stat. Max_mpx should be set to a healthy margin above that number. It should be noted that just automatically setting this high is not a good idea. High values consume a lot of resources in the clients. That is one of the reasons this is a hidden option. Setting this to an unapproved value will cause errors on some clients http://support.microsoft.com/support/kb/articles/Q232/8/90.ASP. Remember that options.cifs.max_mpx controls a number passed in the initial connection of a client to the filer. Changing this value will not affect active sessions. For this reason we recommend only changing this option when cifs is terminated. Once cifs restarts you can insure that all connections will have the new value There is a similar parameter on an NT server. See http://support.microsoft.com/support/kb/articles/q191/3/70.asp -----Original Message----- From: ZANGA, Michael, GCM [mailto:Michael.Zanga@gcm.com] Sent: Monday, April 17, 2000 8:16 AM To: toasters(a)mathworks.com Subject: Cifs.max_mpx Does anyone have any idea what the option cifs.max_mpx does. On a whitepaper from NetApp the option is referenced to be changed to 1124. I presently have it set at 32 and it was hidden. I am reluctant to make the change without knowing what it does. ********************************************************************** This e-mail is intended only for the addressee named above. As this e-mail may contain confidential or privileged information, if you are not the named addressee, you are not authorised to retain, read, copy or disseminate this message or any part of it. ************************************************************************

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RE: Filer volume configuration question
by Norman, Paul 17 Apr '00

17 Apr '00

Steve said "one volume per head", which means the Clustered pair must always have a minimum of two volumes. With a single volume per filer (root volume), each filer is active and serves data from its designated volume. If there is a takeover, then the remaining filer serves data from both volumes. You can have a "hot spare filer", by creating a small root volume on one filer and not have that filer serve any data, but as you say, two volumes each of which has data to be served will give you the best bang for the buck. Paul Norman, Product Manager Direct: (408) 822-6288 Network Appliance E-Mail: pnorman(a)netapp.com 495 East Java Drive Corp: (408) 822-6000 Sunnyvale, CA 94089 Web: WWW.NetApp.Com > -----Original Message----- > From: July at Zerowait [mailto:july@zerowait.com] > Sent: Monday, April 17, 2000 8:05 AM > To: Watanabe, Steve > Cc: 'ari(a)genuity.net'; toasters(a)mathworks.com > Subject: Re: Filer volume configuration question > > > Now I am confused. If there is only one volume, then what you have is > essentially a "hot spare filer" for failover. Surely setting > up two volumes > lets you use both filers actively and gets you more bang for > the buck? While > a single volume cluster might work, is it really the > recommended config? > > July > > "Watanabe, Steve" wrote: > > > Hi Ari, > > A cluster requires a minimum of one volume per head. So > having a 6 disk > > vol0 > > and a spare per node is fine. Make sure that you follow > the directions in > > the > > cluster configuration guide carefully to avoid any > situation where both > > nodes > > are cabled incorrectly allowing access to the same volume > at the same > > time. In fact, I thought NetApp always did the initial cluster > > configuration. > > Is that option available to you? > > -Steve > > > > -----Original Message----- > > From: Ari [mailto:ari@genuity.net] > > Sent: Monday, April 17, 2000 5:31 AM > > To: toasters(a)mathworks.com > > Subject: Filer volume configuration question > > > > Hi, > > > > I am setting up a pair of clustered 740's for the first > time and have a > > question. > > > > Each filer currently has one disk shelf. 6 of the disks > are in the root > > volume, /vol/vol0, and the 7th is a hot spare. Is this > configuration OK > > for a clustered pair? I was told by someone that for a > cluster, I would > > need 2 distinct volumes on each head, although I am not > entirely sure why. > > If that is the case, how do I remove drives from the root > volume so that I > > can add them into a newly created volume? > > > > Any help is greatly appreciated. > > > > > > Ari > > > > > > > > > > Ari Globerman > > > > eBusiness Web Hosting Services > > e-mail: ari(a)genuity.com <mailto:ari@genuity.com> > > phone: 617-873-5843 > > fax: 617-873-4033 > > > > <http://www.genuity.com/> > > > > > > > > > -------------------------------------------------------------- > ---------- > > Name: GTEI.h1.gif > > GTEI.h1.gif Type: GIF Image (image/gif) > > Encoding: base64 > > -- > ---------------------------------------------------------------- > July A. J. Linett, VP Tech Mktg > 302.266.9408 july(a)zerowait.com > > Zerowait: Best Of Breed Internet Core Technologies > Web Acceleration ** Data Storage ** Load Balancing > www.zerowait.com*www.loadbalancing.net*www.nas-san.com > ------------------------------------------------------------------- > >

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RE: Filer volume configuration question
by Watanabe, Steve 17 Apr '00

17 Apr '00

Hi Ari, A cluster requires a minimum of one volume per head. So having a 6 disk vol0 and a spare per node is fine. Make sure that you follow the directions in the cluster configuration guide carefully to avoid any situation where both nodes are cabled incorrectly allowing access to the same volume at the same time. In fact, I thought NetApp always did the initial cluster configuration. Is that option available to you? -Steve -----Original Message----- From: Ari [mailto:ari@genuity.net] Sent: Monday, April 17, 2000 5:31 AM To: toasters(a)mathworks.com Subject: Filer volume configuration question Hi, I am setting up a pair of clustered 740's for the first time and have a question. Each filer currently has one disk shelf. 6 of the disks are in the root volume, /vol/vol0, and the 7th is a hot spare. Is this configuration OK for a clustered pair? I was told by someone that for a cluster, I would need 2 distinct volumes on each head, although I am not entirely sure why. If that is the case, how do I remove drives from the root volume so that I can add them into a newly created volume? Any help is greatly appreciated. Ari Ari Globerman eBusiness Web Hosting Services e-mail: ari(a)genuity.com <mailto:ari@genuity.com> phone: 617-873-5843 fax: 617-873-4033 <http://www.genuity.com/>

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RE: NetApp F7XX + Snapmirror
by Walters, Mike 17 Apr '00

17 Apr '00

Just an additional thought: You can of course mirror vol0 (your 'root + data' volume) from Filer A to vol1 on Filer B as Stephen states. You can then, if you wish, mirror the reverse as well - in other words, have another vol1 on Filer A, & mirror Filer B's 'root + data' to it. I know you never have enough to read ;-) so for an overview of the SnapMirror (& SnapRestore) functionality, you might want to take a look at http://www.netapp.com/tech_library/3043.html. The NOW site has a more in-depth operational guide at http://now.netapp.com/NOW/knowledge/docs/olio/guides/TR3073.shtml. (& as always, the SAG is a good reference point for how-to information ;-) Cheers Mike > First, ALL of a snapmirrored volume is mirrored. There is no way > to make it finer-grained, or to make it exclude certain files or > directories. > > Let's say you have machines A and B. > > A has one volume: vol0. > vol0 has 7 disks and is the root volume. Its /etc files are > used for machine configuration. > > B has two volumes: vol0 and vol1. > vol0 has 2 disks and is the root volume. Its /etc files are > used for machine configuration. > vol1 has 7 disks and is a snapmirror of A:vol0. It is > only readable, and its /etc files are NOT used for > machine configuration, unless you break the > mirror, make it > writeable, and make it the root volume. > > > So, I don't think you need to be too worried about the mirroring of > /etc. However, you still would need 2 more disks on B:vol1 > to be able > to mirror A:vol0 to it. > > Stephen Manley > Data Availability and Management Set-Up Reliever >

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RE: Filer volume configuration question
by Sims, Aaron 17 Apr '00

17 Apr '00

The configuration you specified is perfectly fine for a cluster install. You do not need two volumes for CFO. You do need two volumes for a destination filer in a SnapMirror configuration. Aaron -- Aaron Sims Professional Services Engineer Network Appliance aaron.sims(a)netapp.com 404-226-7382 (cell) 408-822-8947 (voice mail) -----Original Message----- From: Ari [mailto:ari@genuity.net] Sent: Monday, April 17, 2000 8:31 AM To: toasters(a)mathworks.com Subject: Filer volume configuration question Hi, I am setting up a pair of clustered 740's for the first time and have a question. Each filer currently has one disk shelf. 6 of the disks are in the root volume, /vol/vol0, and the 7th is a hot spare. Is this configuration OK for a clustered pair? I was told by someone that for a cluster, I would need 2 distinct volumes on each head, although I am not entirely sure why. If that is the case, how do I remove drives from the root volume so that I can add them into a newly created volume? Any help is greatly appreciated. Ari Ari Globerman eBusiness Web Hosting Services e-mail: ari(a)genuity.com <mailto:ari@genuity.com> phone: 617-873-5843 fax: 617-873-4033 <http://www.genuity.com/>

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RE: Filer volume configuration question
by Cody, Jason 17 Apr '00

17 Apr '00

Ari- You do NOT need more than one volume on each filer to install a cluster. Your configuration is fine. The person you were talking to may have been thinking about snapmirror. That requires more than one volume to be successful. hope this helps- Jason Cody Network Appliance Professional Services Engineer East Mid-Atlantic Region jcody(a)netapp.com 410-299-6290 Cell 888-374-7504 Pager 408-822-8895 Voice Mail 801-340-7018 eFax -----Original Message----- From: Ari [mailto:ari@genuity.net] Sent: Monday, April 17, 2000 8:31 AM To: toasters(a)mathworks.com Subject: Filer volume configuration question Hi, I am setting up a pair of clustered 740's for the first time and have a question. Each filer currently has one disk shelf. 6 of the disks are in the root volume, /vol/vol0, and the 7th is a hot spare. Is this configuration OK for a clustered pair? I was told by someone that for a cluster, I would need 2 distinct volumes on each head, although I am not entirely sure why. If that is the case, how do I remove drives from the root volume so that I can add them into a newly created volume? Any help is greatly appreciated. Ari Ari Globerman eBusiness Web Hosting Services e-mail: ari(a)genuity.com <mailto:ari@genuity.com> phone: 617-873-5843 fax: 617-873-4033 <http://www.genuity.com/>

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