Re: [Veritas-vx] DMP question
Sengor, Ajay, There's an updated version of the DMP whitepaper (covering the latest 5.0 enhancements) at: http://eval.symantec.com/mktginfo/enterprise/white_papers/ent-whitepaper_vsf_5.0_dynamic_multi-pathing_05-2007.en-us.pdf As far as load balancing is concerned, DMP has historically outperformed PP. The names of the PP algorithms really is more marketing than anything else. If you have a chance, try out DMP 5.0's Minimum Queue algorithm and compare. Thomas -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sengor . Sent: Wednesday, October 31, 2007 9:10 PM To: robertinoau Cc: ajay raghuraj; veritas-vx@mailman.eng.auburn.edu Subject: Re: [Veritas-vx] DMP question VxDMP and PP can co-exist on the same server: http://eval.veritas.com/mktginfo/products/White_Papers/Storage _Server_Management/sf_dmp_wp.pdf PP has EMC specific load balancing algorithms specific to their arrays. I believe ASL's for EMC arrays do not have array specific optimised versions of load balancing. On 11/1/07, robertinoau [EMAIL PROTECTED] wrote: You are running PowerPath, therefore what you are seeing is 100% correct. Remove powerpath and install the ASL for you array if you want DMP. - Original Message From: ajay raghuraj [EMAIL PROTECTED] To: veritas-vx@mailman.eng.auburn.edu Sent: Wednesday, 31 October, 2007 9:59:17 PM Subject: [Veritas-vx] DMP question Hi, It looks like multipathing is missing . But I am not sure where it is enabled . Is it in veritas / powerpath / native as this is Sol 10. On Sol 10 how do we check multipathing as been enabled or not ? Is it some option with stmsboot ? Secondly if I have to enable it in veritas , how do i do it ? and how do I verify ? vxdmpadm listctlr all CTLR-NAME ENCLR-TYPE STATE ENCLR-NAME = emcpEMC ENABLED EMC0 c4 EMC DISABLED EMC0 c3 EMC DISABLED EMC0 c1 DiskENABLED Disk c4 EMC ENABLED EMC1 c3 EMC ENABLED EMC1 vxdisk -g mifd_prd_oradg list emcpower18s2 Multipathing information: numpaths: 1 emcpower18c state=enabled vxdisk -o alldgs list . . . EMC1_17 auto--error EMC1_17 auto--error EMC1_17 auto--error . . emcpowerXX emcpowerxy emcpowerxz Regards, Ajay Feel safe with award winning spam protection on Yahoo!7 Mail. Find out more. ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx -- _/ sengork.blogspot.com / ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
Re: [Veritas-vx] DMP question
You are running PowerPath, therefore what you are seeing is 100% correct. Remove powerpath and install the ASL for you array if you want DMP. - Original Message From: ajay raghuraj [EMAIL PROTECTED] To: veritas-vx@mailman.eng.auburn.edu Sent: Wednesday, 31 October, 2007 9:59:17 PM Subject: [Veritas-vx] DMP question Hi, It looks like multipathing is missing . But I am not sure where it is enabled . Is it in veritas / powerpath / native as this is Sol 10. On Sol 10 how do we check multipathing as been enabled or not ? Is it some option with stmsboot ? Secondly if I have to enable it in veritas , how do i do it ? and how do I verify ? vxdmpadm listctlr all CTLR-NAME ENCLR-TYPE STATE ENCLR-NAME = emcpEMC ENABLED EMC0 c4 EMC DISABLED EMC0 c3 EMC DISABLED EMC0 c1 DiskENABLED Disk c4 EMC ENABLED EMC1 c3 EMC ENABLED EMC1 vxdisk -g mifd_prd_oradg list emcpower18s2 Multipathing information: numpaths: 1 emcpower18c state=enabled vxdisk -o alldgs list . . . EMC1_17 auto--error EMC1_17 auto--error EMC1_17 auto--error . . emcpowerXX emcpowerxy emcpowerxz Regards, Ajay Feel safe with award winning spam protection on Yahoo!7 Mail. www.yahoo.com.au/mail ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
Re: [Veritas-vx] DMP question
VxDMP and PP can co-exist on the same server: http://eval.veritas.com/mktginfo/products/White_Papers/Storage_Server_Management/sf_dmp_wp.pdf PP has EMC specific load balancing algorithms specific to their arrays. I believe ASL's for EMC arrays do not have array specific optimised versions of load balancing. On 11/1/07, robertinoau [EMAIL PROTECTED] wrote: You are running PowerPath, therefore what you are seeing is 100% correct. Remove powerpath and install the ASL for you array if you want DMP. - Original Message From: ajay raghuraj [EMAIL PROTECTED] To: veritas-vx@mailman.eng.auburn.edu Sent: Wednesday, 31 October, 2007 9:59:17 PM Subject: [Veritas-vx] DMP question Hi, It looks like multipathing is missing . But I am not sure where it is enabled . Is it in veritas / powerpath / native as this is Sol 10. On Sol 10 how do we check multipathing as been enabled or not ? Is it some option with stmsboot ? Secondly if I have to enable it in veritas , how do i do it ? and how do I verify ? vxdmpadm listctlr all CTLR-NAME ENCLR-TYPE STATE ENCLR-NAME = emcpEMC ENABLED EMC0 c4 EMC DISABLED EMC0 c3 EMC DISABLED EMC0 c1 DiskENABLED Disk c4 EMC ENABLED EMC1 c3 EMC ENABLED EMC1 vxdisk -g mifd_prd_oradg list emcpower18s2 Multipathing information: numpaths: 1 emcpower18c state=enabled vxdisk -o alldgs list . . . EMC1_17 auto--error EMC1_17 auto--error EMC1_17 auto--error . . emcpowerXX emcpowerxy emcpowerxz Regards, Ajay Feel safe with award winning spam protection on Yahoo!7 Mail. Find out more. ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx -- _/ sengork.blogspot.com / ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
Re: [Veritas-vx] dmp question?
Hello, The only thing that wasn't automatic in my case was the recognition of the type of the array, i.e. A-A, A/A-A-HP, A-P etc. In my case (A-A array) I had to manually enable all paths to the luns. I did it when I changed the multipathing scheme to adaptive with the 'use_all_paths=yes' switch. -j- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Omer Faruk Sen Sent: sábado, 11 de agosto de 2007 15:21 To: veritas-vx@mailman.eng.auburn.edu Subject: Re: [Veritas-vx] dmp question? Thanks for all replies. Will check support.veritas.com. You should check failover policies and settings on the array side. DMP will adjust them automatically - depending on it's ASL support. -khurram Jim Senicka [EMAIL PROTECTED] wrote: No setup required. DMP figures it all out -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Omer Faruk Sen Sent: Saturday, August 11, 2007 7:27 AM To: veritas-vx@mailman.eng.auburn.edu Subject: [Veritas-vx] dmp question? Hi, I am a little new to vertias volume manger. I have a problem with understanding multipathing concept and VxVm. As far as I have read DMP is enabled by default. Volume Manager detects multipath systems with the Universal Worldwide Device Identifiers (WWD IDs) and manages multipath targets, such as disk arrays, which define policies for using more than one path. I wanted to ask if there is any additional steps(with vxdmpadm) that I have to take for a system with 2 hba and 2 fiber switches or volume manager understands that 4 paths are the same (from wwd ids) and sets up evertything by itself? Best Regards, -- Omer Faruk Sen http://www.faruk.net ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx - Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search. -- Omer Faruk Sen http://www.faruk.net ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx __ La información incluida en el presente correo electrónico es CONFIDENCIAL, siendo para el uso exclusivo del/os destinatario/s arriba mencionado/s. Si usted recibe y lee este correo electrónico y no es el destinatario señalado, el empleado o el agente responsable de entregar el mensaje al destinatario, o ha recibido esta comunicación por error, le informamos que está totalmente prohibida cualquier divulgación, distribución, uso o reproducción del mismo, y le rogamos que nos lo notifique inmediatamente respondiendo al mensaje original a la dirección arriba mencionada y eliminando el mensaje a continuación. The information contained in this e-mail is CONFIDENTIAL and is intended only for the use of the addressee named above.If the reader of this message is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, or you have received this communication in error, please be aware that any diffusion, distribution or duplication of this communication is strictly forbidden, and please notify us immediately by return to the original message at the address above eliminating it afterwards. ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
Re: [Veritas-vx] dmp question?
No setup required. DMP figures it all out -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Omer Faruk Sen Sent: Saturday, August 11, 2007 7:27 AM To: veritas-vx@mailman.eng.auburn.edu Subject: [Veritas-vx] dmp question? Hi, I am a little new to vertias volume manger. I have a problem with understanding multipathing concept and VxVm. As far as I have read DMP is enabled by default. Volume Manager detects multipath systems with the Universal Worldwide Device Identifiers (WWD IDs) and manages multipath targets, such as disk arrays, which define policies for using more than one path. I wanted to ask if there is any additional steps(with vxdmpadm) that I have to take for a system with 2 hba and 2 fiber switches or volume manager understands that 4 paths are the same (from wwd ids) and sets up evertything by itself? Best Regards, -- Omer Faruk Sen http://www.faruk.net ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
Re: [Veritas-vx] dmp question?
Hi, If your array is supported according to HCL for DMP, there is nothing to do. Please be sure that whether your array is automatically sensed with built in library or you need to download ASL (Array Support library) to use DMP. You can find that information in the Hardware Compatibility List for the product from http://support.veritas.com. Regards, Asiye -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Omer Faruk Sen Sent: 11 Ağustos 2007 Cumartesi 14:27 To: veritas-vx@mailman.eng.auburn.edu Subject: [Veritas-vx] dmp question? Hi, I am a little new to vertias volume manger. I have a problem with understanding multipathing concept and VxVm. As far as I have read DMP is enabled by default. Volume Manager detects multipath systems with the Universal Worldwide Device Identifiers (WWD IDs) and manages multipath targets, such as disk arrays, which define policies for using more than one path. I wanted to ask if there is any additional steps(with vxdmpadm) that I have to take for a system with 2 hba and 2 fiber switches or volume manager understands that 4 paths are the same (from wwd ids) and sets up evertything by itself? Best Regards, -- Omer Faruk Sen http://www.faruk.net ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
Re: [Veritas-vx] dmp question?
You should check failover policies and settings on the array side. DMP will adjust them automatically - depending on it's ASL support. -khurram Jim Senicka [EMAIL PROTECTED] wrote: No setup required. DMP figures it all out -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Omer Faruk Sen Sent: Saturday, August 11, 2007 7:27 AM To: veritas-vx@mailman.eng.auburn.edu Subject: [Veritas-vx] dmp question? Hi, I am a little new to vertias volume manger. I have a problem with understanding multipathing concept and VxVm. As far as I have read DMP is enabled by default. Volume Manager detects multipath systems with the Universal Worldwide Device Identifiers (WWD IDs) and manages multipath targets, such as disk arrays, which define policies for using more than one path. I wanted to ask if there is any additional steps(with vxdmpadm) that I have to take for a system with 2 hba and 2 fiber switches or volume manager understands that 4 paths are the same (from wwd ids) and sets up evertything by itself? Best Regards, -- Omer Faruk Sen http://www.faruk.net ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx - Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search.___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
Re: [Veritas-vx] dmp question?
Thanks for all replies. Will check support.veritas.com. You should check failover policies and settings on the array side. DMP will adjust them automatically - depending on it's ASL support. -khurram Jim Senicka [EMAIL PROTECTED] wrote: No setup required. DMP figures it all out -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Omer Faruk Sen Sent: Saturday, August 11, 2007 7:27 AM To: veritas-vx@mailman.eng.auburn.edu Subject: [Veritas-vx] dmp question? Hi, I am a little new to vertias volume manger. I have a problem with understanding multipathing concept and VxVm. As far as I have read DMP is enabled by default. Volume Manager detects multipath systems with the Universal Worldwide Device Identifiers (WWD IDs) and manages multipath targets, such as disk arrays, which define policies for using more than one path. I wanted to ask if there is any additional steps(with vxdmpadm) that I have to take for a system with 2 hba and 2 fiber switches or volume manager understands that 4 paths are the same (from wwd ids) and sets up evertything by itself? Best Regards, -- Omer Faruk Sen http://www.faruk.net ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx - Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search. -- Omer Faruk Sen http://www.faruk.net ___ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
