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13531 discussions

RE: Diskless Boot of Windows/iSCSI
by Jeff Mohler 10 Feb '05

10 Feb '05

This fits 1/2 the model, the key is that the base load never changes..if the end-user changes something that could have messed the encoding process up somehow, a simple reboot would repair it. To replace the base LUNs, I would have to copy from the snapshot, would take time to copy that file from snapshot space to real space, correct? Ive got Gig to the tent switch (clean workspace on refuel floor) and 100Mbit from there to the PCs. Performance should be in the OK range. The critical function for these PCs is encoding video, once loaded up network traffic for apps or I/O would be small. Also looking at some solutions that manage disk images that will always force clients to a base boot image on a reboot, but Id like to keep the technology layer thin, and I already have netapps in the design. -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com]On Behalf Of Alan Biren Sent: Sunday, February 06, 2005 7:42 PM To: toasters(a)mathworks.com Subject: RE: Diskless Boot of Windows/iSCSI Jeff, As long as you have the base snapshot you can replace the boot LUNs quickly. You can also replicate this image to all of the field sites so that each are configured identically. The one major problem is the hardware has to be identical on each PC that will boot from SAN if you want to use the same image. You'll also need an iSCSI HBA. I would make sure that Network connectivity is reliable between the 250's and the PC's. I believe that the NOW site has instructions on seeting up a diskless system and the requirements to double check. _____ From: owner-toasters(a)mathworks.com on behalf of Jeff Mohler Sent: Sun 2/6/2005 5:19 PM To: toasters(a)mathworks.com Subject: Diskless Boot of Windows/iSCSI Greets: Same name, new location.. Im working a storage solution under contract using Netapp F250s in the field using snapmirror to replicate data back to a central F270 from nuclear plant inspection projects all over the world. I have 8 windows based PCs at each site doing encoding of camera inspections (IVVI), and those write to a file and/or go live over the network to the central location based on the inspection parameters. My largest source of problems are the encoding PCs which are not in the friendliest of environments on the refueling floor. Im looking for advice on whether I should change these PCs to work as diskless boot stations using ISCSI from the F250 that is at each site. The ultimate goal would be a situation where on boot the PC is booted to a static state of base configuration, and if the end-user changes anything (within MS Media encoder/etc) they just reboot to get back to a reliable configuration. The end user isnt storing any data in this image, just USING it to create data stored in a volume on the same F250 at the remote site. Just how diskless can I get, while maintaining an easy to use environment where nobody can screw up the base load image? My window of downtime is 10mins or less to full recovery. ***************************************************************************************************** If you have received this email in error please notify the the system manager or the sender immediately and do not disclosed the to anyone or make copies. ** eSafe scanned this email for viruses, vandals or malicious content ** ** To find out eSafe(TM) and other Aladdin Security Products, contact AMC Corporation at (212) 736-0111 *****************************************************************************************************

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netgroup problem
by Frank Bonnet 10 Feb '05

10 Feb '05

Hi I have s strange problem with some entries into the /etc/netgroup file which does not seem to be cleared when replacing entries. it happen on a F87 running 6.5.2R1 -- Cordialement/Regards Frank Bonnet

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RE: Diskless Boot of Windows/iSCSI
by Derek Lai 09 Feb '05

09 Feb '05

We are looking at doing iSCSI boot of Windows for a different purpose - higher availability, maybe in place of clustering which is alot more expensive and complex. We have a production SQLServer which management does not feel is necessary to go through the complexity and cost to do a cluster. However, they are intersted in <30 min SLA. We currently have a spare server sitting around just in case. If we setup iSCSI boot of Windows then we can swap the spare server in place of the production server if the production server ever has hardware problem, right? Has anyone done this with one of the iSCSI accelerators? I've only setup for iSCSI with MS SW initiator. But I would imagine the iSCSI id would be fully contained on the iSCSI accelerator and if I remove it from one server and place into another server with the same configuration then the new server will just boot up as the original server? Derek

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RE: Diskless Boot of Windows/iSCSI
by Derek Lai 09 Feb '05

09 Feb '05

Jeff, No sure if you have gotten additional answers. But you might want to look into writable LUN. It is a LUN based on snapshot and can be changed but at some point you can just throw it away and off goes all the changes. It is pretty quick to create the writable LUN. Derek -----Original Message----- From: Jeff Mohler [mailto:jeff.mohler@signasys.com] Sent: Monday, February 07, 2005 6:58 PM To: Alan Biren; toasters(a)mathworks.com Subject: RE: Diskless Boot of Windows/iSCSI This fits 1/2 the model, the key is that the base load never changes..if the end-user changes something that could have messed the encoding process up somehow, a simple reboot would repair it. To replace the base LUNs, I would have to copy from the snapshot, would take time to copy that file from snapshot space to real space, correct? Ive got Gig to the tent switch (clean workspace on refuel floor) and 100Mbit from there to the PCs. Performance should be in the OK range. The critical function for these PCs is encoding video, once loaded up network traffic for apps or I/O would be small. Also looking at some solutions that manage disk images that will always force clients to a base boot image on a reboot, but Id like to keep the technology layer thin, and I already have netapps in the design. -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com]On Behalf Of Alan Biren Sent: Sunday, February 06, 2005 7:42 PM To: toasters(a)mathworks.com Subject: RE: Diskless Boot of Windows/iSCSI Jeff, As long as you have the base snapshot you can replace the boot LUNs quickly. You can also replicate this image to all of the field sites so that each are configured identically. The one major problem is the hardware has to be identical on each PC that will boot from SAN if you want to use the same image. You'll also need an iSCSI HBA. I would make sure that Network connectivity is reliable between the 250's and the PC's. I believe that the NOW site has instructions on seeting up a diskless system and the requirements to double check. _____ From: owner-toasters(a)mathworks.com on behalf of Jeff Mohler Sent: Sun 2/6/2005 5:19 PM To: toasters(a)mathworks.com Subject: Diskless Boot of Windows/iSCSI Greets: Same name, new location.. Im working a storage solution under contract using Netapp F250s in the field using snapmirror to replicate data back to a central F270 from nuclear plant inspection projects all over the world. I have 8 windows based PCs at each site doing encoding of camera inspections (IVVI), and those write to a file and/or go live over the network to the central location based on the inspection parameters. My largest source of problems are the encoding PCs which are not in the friendliest of environments on the refueling floor. Im looking for advice on whether I should change these PCs to work as diskless boot stations using ISCSI from the F250 that is at each site. The ultimate goal would be a situation where on boot the PC is booted to a static state of base configuration, and if the end-user changes anything (within MS Media encoder/etc) they just reboot to get back to a reliable configuration. The end user isnt storing any data in this image, just USING it to create data stored in a volume on the same F250 at the remote site. Just how diskless can I get, while maintaining an easy to use environment where nobody can screw up the base load image? My window of downtime is 10mins or less to full recovery. **************************************************************************** ************************* If you have received this email in error please notify the the system manager or the sender immediately and do not disclosed the to anyone or make copies. ** eSafe scanned this email for viruses, vandals or malicious content ** ** To find out eSafe(TM) and other Aladdin Security Products, contact AMC Corporation at (212) 736-0111 **************************************************************************** *************************

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Tracking fpolicy/vscan contribution to filer load
by Hill, Aaron 08 Feb '05

08 Feb '05

Does anyone have some information on where to look for information on vscan and fpolicy contribution to filer load over time? I would think that this would be available within the perfstat output or perhaps even the Filer Performance monitor (DFM Client performance agent). Any assistance on expected statistics would be helpful. Regards, Aaron ************** IMPORTANT MESSAGE ************** This e-mail message is intended only for the addressee(s) and contains information which may be confidential. If you are not the intended recipient please advise the sender by return email, do not use or disclose the contents, and delete the message and any attachments from your system. Unless specifically indicated, this email does not constitute formal advice or commitment by the sender or the Commonwealth Bank of Australia (ABN 48 123 123 124) or its subsidiaries. We can be contacted through our web site: commbank.com.au. If you no longer wish to receive commercial electronic messages from us, please reply to this e-mail by typing Unsubscribe in the subject line. ***************************************************************

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snaplocker utility with Veritas
by Bui, Marcus 08 Feb '05

08 Feb '05

Hi Toasters, I have an R200 with SnapLock Enterprise on ONTAP 6.5R2. A batch job runs every night to set the retention period against the data on a couple of WORM volume. The application that manages these data does not have the ability to set retention period, yet. Therefore, I have to run the Snaplocker.exe utility to manually set the retention period. The batch job as follow: snaplocker.exe \\Filer\volume <file:///\\Filer\volume%201h%203m%20\> 1h 3m /F << The /F switch is used because some files written/copied to the volume may already be 'read only'. The problem is with Veritas Netbackup Enterprise v4.5 incremental backup. All incremental backup is treated as a full backup since the batch job scans all files every time it runs. This somehow causes Veritas to think a file already there is a new/modified. And so, every backup job is a full. Any suggestions? Cheers, Marcus Hiep Bui >marcus.bui @ aiminvestments. com < ----------------------------------------- Confidentiality Note: The information contained in this message, and any attachments, may contain confidential and/or privileged material. It is intended solely for the person or entity to which it is addressed. Any review, retransmission, dissemination, or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.

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RE: F740 memory upgrade to lower CPU utilization?
by Bui, Marcus 08 Feb '05

08 Feb '05

John, More RAM will help, you can never have too much of it. These are the items to look for: 1. Are there any volumes > %90 full? Volume over %90 can degrade performance, especially on busy volume. 2. For cifs you can use "cifs top" command ( "cifs.per_client_stats.enable" must be on). These will show the top cifs clients ops. There's also one for NFS on NOW. 3. use "statit" command. This will provide a lot of very good information of what's going on. 4. If you have DFM v3.0 or higher, use the DFM client that comes with it. It's has a lot of good performance stats. As for the replacement upgrade, I suggest talk to your local Netapp. There are many things to take into consideration to make a good recommendation. Good luck, Marcus Bui -----Original Message----- From: owner-toasters(a)mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Stewart, John Sent: Tuesday, February 08, 2005 12:51 PM To: 'toasters(a)mathworks.com' Subject: F740 memory upgrade to lower CPU utilization? We've got an F740 with 3 fully populated FC9 shelves, 36Gb disks, 432GB used (30 free). In the last couple of months the CPU has been getting higher and higher utilization. We've only got 512MB of RAM in there. Would an upgrade (to 1GB) be advisable? CPU isn't upgradable, is it? If we're pegging an F740 like this, and have 0.5TB of data now.... assuming a growth to 2TB in the next 3 years, what sort of box should we be looking at for a replacement (need to get the bean counters prepared)? thanks! johnS ----------------------------------------- Confidentiality Note: The information contained in this message, and any attachments, may contain confidential and/or privileged material. It is intended solely for the person or entity to which it is addressed. Any review, retransmission, dissemination, or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.

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F740 memory upgrade to lower CPU utilization?
by Stewart, John 08 Feb '05

08 Feb '05

We've got an F740 with 3 fully populated FC9 shelves, 36Gb disks, 432GB used (30 free). In the last couple of months the CPU has been getting higher and higher utilization. We've only got 512MB of RAM in there. Would an upgrade (to 1GB) be advisable? CPU isn't upgradable, is it? If we're pegging an F740 like this, and have 0.5TB of data now.... assuming a growth to 2TB in the next 3 years, what sort of box should we be looking at for a replacement (need to get the bean counters prepared)? thanks! johnS

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Curso GIS y Teledetección - Clases Gratuitas
by giscabildos＠ciudad.com.ar 08 Feb '05

08 Feb '05

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Drive Image Pro 5 from a filer?
by Trindade, Nicole 07 Feb '05

07 Feb '05

All, We have moved our Windows desktop image store from a Windows host over to a filer. We are using Drive Image Pro 5. The image process runs in an PE environment. We are able to map a drive to the filer from within the PE environment, but if you do a 'dir' the directory appears to be empty. Has anyone seen this before? Thanks, Nicole

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