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 > > ===================================================== > > emcp EMC ENABLED EMC0 > > c4 EMC DISABLED EMC0 > > c3 EMC DISABLED EMC0 > > c1 Disk ENABLED 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
