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13515 discussions

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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Se ofrecen los siguientes cursos con la modalidad distancia y presencial. > ArcView 3 > ArcGis/ArcView 8 > ENVI > Teledetección (Certificado Universidad de Buenos Aires) > Sistemas de Información Geográfica (Certificado Universidad de Buenos Aires) > Bases de datos (Certificado Universidad de Buenos Aires) > Image Analysis for ArcGis ---ASESORIAS Somos especialistas en diseñar, desarrollar, integrar, personalizar e implementar soluciones basadas en GIS y teledetección. Nos caracterizamos por transferir esta tecnología. ---DESARROLLOS Creamos aplicaciones y personalizaciones a medida, según definición de necesidades específicas expuestas por el cliente o derivadas de nuestra actividad de consultoría. Para solicitar mayor información mandar mail a gistele2005(a)fullzero.com.ar ó a centrogis(a)latinmail.com ---LISTADO DE PARTICIPANTES - UNIVERSIDADES Ancash (Perú), Bahía Blanca, Belgrano, Bologna, Buenos Aires, Católica, Centro de la Provincia de Buenos Aires, Chiba (Japón), Córdoba, Comahue, Cuyo, Fraternidad de Agrupaciones Santo Tomás de Aquino (F.A.S.T.A), Flores, Formosa, General Sarmiento, Guanajuato (México), Jujuy, La Plata, Latinoamericana de Ciencias Ambientales, La Pampa, La Patagonia Austral, La Republica (Uruguay), La Rioja, Litoral, Lomas de Zamora, Lujan, Mar del Plata, Mayor de San Andres (Bolivia), Misiones, Nacional (Colombia), Nacional Autonoma de Mexico (Mexico), Nordeste, Pilar (Paraguay), Quilmes, Rosario, Salta, Salvador, San Juan, Santa Fe, San Juan Bosco, Sur, Tecnológica Nacional, Torcuato Di Tella, Tucumán, Valladolid (España), Veracruzana (México), etc. -MUNICIPALIDADES 3 de Febrero, Bahía Blanca, Benito Juárez, Bragado, Campana, Cañuelas, Castelli, Chascomús, Coronel Suárez, Coronel Rosales, Despeñaderos, Escobar, Florencio Varela, General Alear, General Pueyrredón, Gobierno de la Ciudad de Buenos Aires, Jesús María, Junín, La Plata, Laboulaye, Laprida, Lincoln, Lomas de Zamora, Malvinas Argentinas, Moreno, Morón, Necochea, Pehuajo, Pergamino, Posadas, Quilmes, Ramallo, Río Gallegos, Rosario, Saladillo, Salta, San Fernando, San Isidro, San Martín, San Nicolás, San Salvador de Jujuy, Santa Fe, Santo Tomé, Suipacha, Tigre, Venado Tuerto, Vicente López, Viedma, Villa Allende, Villa Constitución, Villa de Merlo, Villa María, etc. -ONG ACEN - Asociación para la Conservación y el Estudio de la Naturaleza, ANIMA Arquelogia Submarina (Chile), Asociación Demosvida, Asociación Guyra (Paraguay), Aves Argentinas, Conservación Argentina, CIAC Centro de Investigación y Apoyo Campesino (Bolivia), DEFOR - Asociacion Civil para la Investigación y Desarrollo Forestal (Perú), Estación Científica Charles Darwin (Ecuador), Fundación Amigos para la Naturaleza Noel Kempff (Bolivia), Fundación Cethus, Fundación CEPA / FLACAM, Fundación Green Cross, Fundación Moisés Bertoni (Paraguay), Fundación Pro Vivienda Social, Fundación Vida Silvestre Argentina, Instituto de Investigaciones Ambientales del Pacífico (Colombia), Plus Radio (Paraguay). -EMPRESAS ACA - Automóvil Club Argentino, Aeromapa, Agrimax, Agrosat Ambiental SA, Agroservicios SRL, Ambiente OnLine, Analogías - Empresa dedicada a la investigación de mercado y marketing político , ASTECNA SA, BA&H BOOZ ALLEN & HAMILTON Consultora, BellSouth, Boston Geomática SRL (Paraguay), Buffarini & Buffarini - Agrimensura, Cableuropa SAU (España), CADEB S.A. - Compañía Administradora de Empresas (Bolivia), Chevron Petrolera, CNEA - Comisión Nacional de Energía Atómica, Consultora Ambiental Echechuri, Consultora de Ingeniería Cooprogetti, ComTrad SA, Cooperativa "16 de Octubre" de Servicios Públicos, Cooperativa "16 de Octubre" de Servicios Públicos de Esquel, Cooperativa Eléctrica de Venado Tuerto, Copygraph, Cybermapa, Diario La Nación, Econat SA, Energicon SA, Epson Argentina, Estudio EGA, Euroflores SA (Uruguay), Fomicruz SE, Franklin Consultora SA, Fusion Sudamericana SA, GARJO Ingenieros Contratistas SRL (Perú), GEA Geólogos Asociados, GMS SA, Grant Geophysical Inc (Colombia), Guías FILCAR, Halcrow (Ingeniería Hidráulica), Hewlett Packard, HIDRA Servicios de Ingeniería, Hidroblan SA, HYTEC, IATASA - Ingeniería y Asistencia Técnica Argentina SA, ITG Consultores SA, IDEGEPP - Instituto de Desarrollo y Gestión de Obras Públicas, JMB SA Ingeniería Ambiental, Kiskali SA, K.K.L. 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Martinez SA, Petro Imagen, Petrolera Pan American Energy, Petrolera Quintana Minerals, Phoenix Oil & Gas, PlusPetrol, Profertil SA, Recovery SA - Planeamiento y Catastro, Sistemas Catastrales, Sir William Halcrow LTD, SERVICOOP - Cooperativa de Servicios Públicos de Madryn, SEINCO SRL (Uruguay), Serrater SL (España), Solurban SA, SRK Consultores SA (Chile), Tack Training SA, TRANSBA SA - Transporte de Energía Eléctrica de la Provincia de Buenos Aires, Transpetr! ol SA, T r cana, URBI - Concesionario del Catastro de la Ciudad de Posadas, WMC - Water Management Consultants (Chile), YPF-REPSOL, ZYZ Consultores - Servicios en Medioambiente, Estructuras, Estudios de suelos. -OTROS ORGANISMOS Administración de Parques Nacionales, Armada Argentina, Asociación Civil para la Investigación y Desarrollo Forestal (Perú), Auditoria General de la Nación, AIC - Autoridad Interjurisdiccional de las Cuencas de los Ríos Limay, Neuquén y Negro, Autoridad Regulatoria Nuclear, Banco de la Provincia de Buenos Aires, CEAMSE - Coordinación Ecológica Área Metropolitana Sociedad del Estado, CDPAP - Centro de Desarrollo de Proyectos Avanzados en Pediatría, Centro de Geología de Costas y del Cuaternario, Centro de Sensores Remotos De la FAA, CABA - Programa Reforma Política, CEPED - Instituto de Investigaciones Económicas, CITEFA - Instituto de Investigación Científica y Técnica de la Fuerzas Armadas, CNEA - Comisión Nacional de Energía Atómica, Colegio de Agrimensores - Distrito 1, CIC - Comisión de Investigaciones Provincia de Bs. As, CONAE - Comisión Nacional de Actividades Espaciales, CONICET - Consejo Nacional de Investigaciones Científicas y Técnicas, CONIDA - Comisión Nacional de Investigación y Desarrollo Aeroespacial (Peru), CFI - Consejo Federal de Inversiones, Consejo Provincial de Educación - Neuquén, COREBE - Comisión Regional del Río Bermejo, CORFO - Corporación de Desarrollo Valle Bonaerense del Río Colorado, Defensoría del Pueblo, Dirección General de Escuelas de la Provincia de Bueno Aires, Dirección General de Minería - Neuquen, Dirección Nacional de Desarrollo Urbano de la Subsecretaria de Desarrollo Urbano y Vivienda de La Nación, Dirección Provincial de Desarrollo Industrial Minero y Comercial - Catamarca, Entidad Binacional Yaciretá, EPEN - Ente Provincial de Energía del Neuquen, Escuela de Ingeniería de Caminos de Montaña, Escuela de Prefectura Nacional, Fuerza Aérea Argentina, Gobierno Provincial de Córdoba, IGM - Instituto Geográfico Militar, INA - Instituto Nacional del Agua, INDEC - Instituto Nacional de Estadística y Censos, INREMI - Instituto de Recursos Minerales de la Facultad de Ciencias Naturales y Museo UNLP, Instituto Antártico Argentino, Instituto Provincial de la Vivienda de Fo! rmosa, I n tura Sostenible (España), INTA - Instituto Nacional de Tecnología Agropecuaria, Laboratorio Tecnológico del Uruguay - LATU (Uruguay), Ministerio de Bienes Nacionales (Chile), Ministerio de Desarrollo Social y Medio Ambiente, Ministerio de Economía, Ministerio de Economía de la Provincia de Neuquen, Ministerio de Economía del Chaco, Ministerio de Economía de la Ciudad de La Plata, Ministerio de Infraestructura y Vivienda de la Subsecretaria de Recursos Hídricos, Ministerio de Infraestructura y Vivienda, Ministerio de Justicia y Seguridad de la Provincia de Buenos Aires, Ministerio de la Producción de la Provincia de Chaco, Ministerio de Servicios y Obras Públicas de la Provincia de Buenos Aires, Ministerio del Agro y la Producción de la Provincia de Misiones, Ministerio del Agro y La Producción de la Provincia de Misiones, Ministerio del Interior - Unidad ejecutora Central Catastro, Museo de Ciencias Naturales, Museo Nacional de Costa Rica, OCRABA - Órgano de Control de los Accesos a la Ciudad de Buenos Aires, ORSEP - Organismo Regulador de Seguridad de Presas, Secretaria de Agricultura de la Nación, Secretaria de Minería de la Nación, Secretaría de Obras y Servicios Públicos Provincia de Río Negro, Secretaria de Turismo de la Nación, Secretaría de Ambiente y Desarrollo Sustentable, SEGEMAR - Servicio Geológico Minero Argentino, SENASA - Servicio Nacional de Sanidad Animal y Calidad Agroalimentaria, Servicio Agrícola Ganadero (Chile), Servicio Nacional de Áreas Protegidas (Bolivia), Servicio de Hidrografía Naval, Servicio de Vivienda y Urbanismo (Chile), SIFEM - Sistema Federal de Emergencias del Estado Nacional, Servicio Agrícola Ganadero AG (Chile), Sociedad Rural de Rivadavia, SUNARP Superintendencia Nacional de los Registros Públicos (Perú), Vialidad de la Provincia de Buenos Aires, Vialidad de la Provincia de La Rioja, Vialidad Nacional, etc. Para solicitar mayor información mandar mail a gistele2005(a)fullzero.com.ar ó a centrogis(a)latinmail.com __________________________________________________ Todavía no tenés tu Ciudad Internet Mail? 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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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Fibre Channel Woes
by Tavis Gustafson 07 Feb '05

07 Feb '05

I'm running an 840 with a DS14 ( 144GB disks ) connected to each other with a dual port optical fibre channel card. Early this morning the filer went down and apon reboot i started seeing lots of fibre channel frame errors. I swapped optical cables and tried the second port on the card but the errors came back when rebuilding. I am trying to determine if the problem is the the fibre channel card or with the LRC in the disk shelf. Anybody know if this is indicatd in these error messages ? Thanks for any help -Tavis Volume State Status Options boot online reconstruct root, raidsize=7 amplifier> Fri Feb 4 11:55:07 GMT [FastEnet-10/100/e3c:notice]: uid 30358 tid 1: disk quota exceeded on volume boot. onal warnings will be suppressed for approximately 60 minutes or until either a 'quota resize' is performed. Fri Feb 4 11:55:34 GMT [download.updateDone:info]: Bootblock update completed Fri Feb 4 11:56:35 GMT [FastEnet-10/100/e3c:notice]: uid 51154 tid 1: disk quota exceeded on volume boot. Additiona gs will be suppressed for approximately 60 minutes or until either a 'quota resize' is performed. amplifier> Fri Feb 4 12:00:00 GMT [kern.uptime.filer:info]: 12:00pm up 7 mins, 935006 NFS ops, 0 CIFS ops, 0 HTTP o FS ops, 0 FCP ops, 0 iSCSI ops amplifier> Fri Feb 4 12:08:09 GMT [wafl_hipri:notice]: uid 24271 tid 1: disk quota exceeded on volume boot. Additio ings will be suppressed for approximately 60 minutes or until either a 'quota resize' is performed. Fri Feb 4 12:13:59 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.80: request failed after try #1: cdb 0x1c. Fri Feb 4 12:14:23 GMT [scsi.cmd.checkCondition:error]: Device 8b.82: Check Condition: CDB 0x2a:09b24e98:0080: Sense SI:aborted command - Fibre Channel frame CRC error (0xb - 0x47 0x0 0x3)(57649). Fri Feb 4 12:14:23 GMT [scsi.cmd.checkCondition:error]: Device 8b.82: Check Condition: CDB 0x2a:09b24e18:0080: Sense SI:aborted command - Fibre Channel frame CRC error (0xb - 0x47 0x0 0x3)(57657). Fri Feb 4 12:14:31 GMT [scsi.cmd.retrySuccess:info]: Device 8b.82: request successful after retry #1: cdb 0x2a:09b24 . Fri Feb 4 12:14:31 GMT [scsi.cmd.retrySuccess:info]: Device 8b.82: request successful after retry #1: cdb 0x2a:09b24 . Fri Feb 4 12:14:31 GMT [wafl_lopri:warning]: NFS response to client 10.3.38.28 was slow, op was v3 read, 63 > 60 (in ) Fri Feb 4 12:14:48 GMT [scsi.cmd.checkCondition:error]: Device 8b.84: Check Condition: CDB 0x2a:09b25418:0080: Sense SI:aborted command - Fibre Channel frame CRC error (0xb - 0x47 0x0 0x3)(16996). Fri Feb 4 12:14:51 GMT [scsi.cmd.checkCondition:error]: Device 8b.84: Check Condition: CDB 0x2a:09b25418:0080: Sense SI:aborted command - Fibre Channel frame CRC error (0xb - 0x47 0x0 0x3)(20148). Fri Feb 4 12:14:53 GMT [ispfc_timeout_1:warning]: 8b.81 (0x01000051) (0x034f47b0,0x2a:09b25298:0080,0/0,20150/0/0,80 ommand timeout, quiescing drive to allow outstanding I/O to complete. Fri Feb 4 12:15:33 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.80: request failed after try #1: cdb 0x1c. Fri Feb 4 12:15:40 GMT [telnet_0:info]: root logged in from host: 10.3.67.21 vol status Volume State Status Options Fri Feb 4 12:16:19 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.80: request failed after try #1: cdb 0x1c. Fri Feb 4 12:16:37 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.84: request failed after try #3: cdb 0x2a:09b25418 Fri Feb 4 12:16:37 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.81: request failed after try #1: cdb 0x2a:09b25298 Fri Feb 4 12:16:49 GMT [ispfc_timeout_1:warning]: 8b.92 (0x0100005c) (0x034f4d00,0x2a:09b25698:0080,0/0,19912/0/0,87 ommand timeout, quiescing drive to allow outstanding I/O to complete. Fri Feb 4 12:16:49 GMT [ispfc_timeout_1:warning]: 8b.85 (0x01000055) (0x034f5690,0x2a:09b25218:0080,0/0,11587/0/0,87 ommand timeout, quiescing drive to allow outstanding I/O to complete. Fri Feb 4 12:16:49 GMT [ispfc_timeout_1:warning]: 8b.84 (0x01000054) (0x034f6020,0x2f:0025a800:0400,0/0,20143/0/0,87 ommand timeout, quiescing drive to allow outstanding I/O to complete. Fri Feb 4 12:16:49 GMT [ispfc_timeout_1:warning]: 8b.83 (0x01000053) (0x034f5be0,0x2a:09b25298:0080,0/0,20153/0/0,87 ommand timeout, quiescing drive to allow outstanding I/O to complete. Fri Feb 4 12:16:49 GMT [ispfc_timeout_1:warning]: 8b.82 (0x01000052) (0x034f6350,0x2a:09b25418:0080,0/0,20104/0/0,87 ommand timeout, quiescing drive to allow outstanding I/O to complete. Fri Feb 4 12:16:49 GMT [ispfc_timeout_1:warning]: 8b.81 (0x01000051) (0x034f6ac0,0x2f:0025ac00:0400,0/0,20153/0/0,87 ommand timeout, quiescing drive to allow outstanding I/O to complete. Fri Feb 4 12:16:52 GMT [ispfc_timeout_1:error]: 8b.85 (0x01000055): global device timer timeout, initiating device r Fri Feb 4 12:16:52 GMT [scsi.cmd.abortedByHost:error]: Device 8b.92: Command aborted by host adapter: HA status 0x4: a:09b25698:0080. Fri Feb 4 12:16:52 GMT [scsi.cmd.abortedByHost:error]: Device 8b.92: Command aborted by host adapter: HA status 0x4: f:0025ac00:0400. Fri Feb 4 12:16:52 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.92: request failed after try #1: cdb 0x2a:09b25618 Fri Feb 4 12:16:52 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.92: request failed after try #1: cdb 0x2a:09b25518 Fri Feb 4 12:16:52 GMT [ispfc_timeout_1:error]: 8b.84 (0x01000054): global device timer timeout, initiating device r Fri Feb 4 12:16:52 GMT [scsi.cmd.abortedByHost:error]: Device 8b.85: Command aborted by host adapter: HA status 0x4: f:0025a800:0400. Fri Feb 4 12:16:52 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.85: request failed after try #1: cdb 0x2a:09b25098 Fri Feb 4 12:16:52 GMT [scsi.cmd.abortedByHost:error]: Device 8b.85: Command aborted by host adapter: HA status 0x4: 8:109ed500:0040. Fri Feb 4 12:16:52 GMT [scsi.cmd.abortedByHost:error]: Device 8b.85: Command aborted by host adapter: HA status 0x4: a:09b25218:0080. Fri Feb 4 12:16:52 GMT [ispfc_timeout_1:error]: 8b.83 (0x01000053): global device timer timeout, initiating device r Fri Feb 4 12:16:52 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.84: request failed after try #1: cdb 0x2f:0025a800 Fri Feb 4 12:16:52 GMT [ispfc_timeout_1:error]: 8b.82 (0x01000052): global device timer timeout, initiating device r Fri Feb 4 12:16:52 GMT [scsi.cmd.abortedByHost:error]: Device 8b.83: Command aborted by host adapter: HA status 0x4: a:09b25298:0080. Fri Feb 4 12:16:52 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.83: request failed after try #1: cdb 0x2a:09b25198 Fri Feb 4 12:16:52 GMT [scsi.cmd.abortedByHost:error]: Device 8b.83: Command aborted by host adapter: HA status 0x4: f:0025ac00:0400. Fri Feb 4 12:16:52 GMT [ispfc_timeout_1:error]: 8b.81 (0x01000051): global device timer timeout, initiating device r Fri Feb 4 12:16:52 GMT [scsi.cmd.abortedByHost:error]: Device 8b.82: Command aborted by host adapter: HA status 0x4: f:0025ac00:0400. Fri Feb 4 12:16:52 GMT [scsi.cmd.abortedByHost:error]: Device 8b.82: Command aborted by host adapter: HA status 0x4: a:09b25398:0080. Fri Feb 4 12:16:52 GMT [scsi.cmd.abortedByHost:error]: Device 8b.82: Command aborted by host adapter: HA status 0x4: a:09b25418:0080. Fri Feb 4 12:16:52 GMT [scsi.cmd.abortedByHost:error]: Device 8b.81: Command aborted by host adapter: HA status 0x4: f:0025ac00:0400. Fri Feb 4 12:16:54 GMT [ispfc_timeout_1:warning]: 8b.80 (0x01000050) (0x034f58b0,0x1c,0/0,56193/0/0,8745/0): command , quiescing drive to allow outstanding I/O to complete. Fri Feb 4 12:17:00 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.80: request failed after try #1: cdb 0x1c. Fri Feb 4 12:17:08 GMT [scsi.cmd.retrySuccess:info]: Device 8b.85: request successful after retry #1: cdb 0x28:109ed . Fri Feb 4 12:17:25 GMT [scsi.cmd.retrySuccess:info]: Device 8b.82: request successful after retry #1: cdb 0x2a:09b25 . Fri Feb 4 12:17:25 GMT [scsi.cmd.pastTimeToLive:error]: Device 8b.89: request failed after try #1: cdb 0x28:10bc5c38 Fri Feb 4 12:17:25 GMT [scsi.cmd.checkCondition:error]: Device 8b.83: Check Condition: CDB 0x2a:09b25298:0080: Sense SI:aborted command - Fibre Channel frame CRC error (0xb - 0x47 0x0 0x3)(42100). F PANIC: raid volfsm: vol boot: fatal multi-disk error. in process config_thread on release NetApp Release 6.4.5 on Fri 12:17:25 GMT 2005

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RE: Diskless Boot of Windows/iSCSI
by Alan Biren 07 Feb '05

07 Feb '05

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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Diskless Boot of Windows/iSCSI
by Jeff Mohler 07 Feb '05

07 Feb '05

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.

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Re: question about copying an Oracle instance
by Alan.McLachlan＠didata.com.au 06 Feb '05

06 Feb '05

Hi Steve, Where no updates are required, people have been doing what you describe with NetApp for over half a decade, by simply applying queries to previous night's snapshots. Where updates prior to querying are required (as you describe) the answer is different depending on whether you are using file or block I/O. Block I/O (iSCSI and FCP) has had read/write snapshot support for some time, by virtue of block-level virtualisation and indirection in a container file on top of WAFL. File I/O (NFS, CIFS) has read/write snapshot support in Ontap 7G. This is basically the same, at least in effect, as what you describe. It's acheived using block-level virtualisation and indirection underneath WAFL. Your DBA's will argue against using snapshots on the basis of disk contention, and in extreme environments this is something to be careful of. Generally though the read cache will take care of this sufficiently and they will not notice a significant hit. Where contention becomes an issue, clones are more appropriate. NetApp do a very good job at hiding contention compared to most storage solutions - temporal locality in writes to reduce seek overhead makes quite a difference to smoothing out read cache loading (I'm going a little too deep here... enough to say it works well enough that sharing snapshots for reporting on NetApp doesn't cause anywhere near the hit to production that it does on other vendor arrays). Whether you should be using file or block I/O depends on the nature of your database. In general, smaller transactions perform better with file I/O, larger records perfom better with block I/O. (opposite of traditional thinking). This is due to the metadata and CPU overhead versus the actual payload - for larger I/O's (i.e. binary large object blocks) these overheads are proportionately small and block I/O streams better. For small I/O's the opposite is true and NFS is a good solution - plus with a hard mount it is very robust (cable disconnect for extend periods won't crash the database). It sounds like your DBA's are fairly traditional and will resist a modern analysis and modern recommendations - they will still want to feel that they are managing the I/O characteristics of the disk solution. This is where EMC is appealing to many old-fashioned DBA's, as it allows them to retain a hands on approach to the disk configuration. They may have a hard time swallowing that NetApp's virtualise-everything approach can actually lead to better performance in some circumstances, and that even where it doesn't the management benefits more than make up for any small negative difference in I/O throughput. They still have an even harder time swallowing NFS mount, even when you tell them that Oracle themselves mount many of their in-house databases that way. DBA's in general today need to start learning to leave disk management to storage people and concentrate on their applications - they tend to get their backs up when this is suggested to them.... What they need to realise is that they aren't dealing with host-managed JBOD anymore and modern storage subsystems take care of I/O contention without the traditional manual disk tuning. The value a true DBA brings is in writing SQL, not partitioning hard disks. This is where Oracle Consulting Services (OCS) can step in and help - the argument carries more weight when it comes straight "from the horses mouth". Hoe this helps, Alan McLachlan ___________________________________ Solution Architect - Data Centre Solutions Dimension Data Australia Alan.McLachlan(a)didata.com.au Tel. +61 (0)2 61225123 Fax +61 (0)2 62486346 Mobile 0428 655644 Steve Losen <scl(a)sasha.acc.virginia.edu> Sent by: owner-toasters(a)mathworks.com 05/02/2005 12:47 AM To: toasters(a)mathworks.com cc: Subject: question about copying an Oracle instance We currently have our Oracle stuff running on Solaris boxes with (essentially) locally attached raid. We also have a clustered pair of Netapp filers that we use for home directories and other NAS storage. And our email system is running on Solaris with locally attached raid. We are looking into replacing our aging filers and locally attached raid disks with some kind of SAN/NAS solution. I'm the filer admin, so naturally I would like to see us buy Netapp. But I think the Oracle folks are going to push for EMC. Our Oracle folks have this situation where they need to make a copy of a 500G production Oracle instance every night and ship it to a data warehouse server. Then they do some automatic updates on the warehouse instance and make it available for querying. I know that both Netapp and EMC have efficient ways of handling this where you only need to copy part of the data. For example, on a Netapp we could use snapmirror and EMC claims to have similar functionality. However, the Oracle folks want to know what a worst case scenario would be, where you simply must copy all the data rather than just snapmirror the changes. It looks like EMC would probably be able to handle this sort of bulk copy faster than a comparable filer. But I was thinking that Netapp might have a better way to accomplish this. I don't know if this is supported or not, but theoretically WAFL should be able to handle it. Instead of actually copying the Oracle instance data (which would be either a 500G LUN or a 500G NFS file) you create a virtual copy. To do this, you would allocate a new inode for the copy, but link in the same data blocks as the original inode. This would be MUCH faster than copying the data, practically instantaneous. Of course the two copies would be in the same volume. Because WAFL always makes updates on fresh blocks, never changing existing data blocks, it would be possible to run the production instance on the original file and the warehouse instance on the virtual copy. Updates to one file would have no effect on the other. Once a day you could remove the warehouse instance and start over with a new "virtual copy". Maybe Netapp already supports something like this. But if not, they should think about it. I think it would be very handy in the database world where people need to run tests on production data, but are loathe to test on their production instance. I can see one problem right off the bat. Linking the same data block into more than one file is usually considered a filesystem no-no. So WAFL would need to be modified to support this, which might require some tricky bookkeeping. Perhaps each data block would need a file reference count, to indicate how many files it belongs to. If Netapp already supports something like this, I need to tell our folks who like EMC. If the powers that be choose EMC, how difficult will the EMC NAS product make my life? I realize this is a Netapp-centric list, so opinions will be biased. Steve Losen scl(a)virginia.edu phone: 434-924-0640 University of Virginia ITC Unix Support ****************************************************************************** - NOTICE FROM DIMENSION DATA AUSTRALIA This message is confidential, and may contain proprietary or legally privileged information. If you have received this email in error, please notify the sender and delete it immediately. 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