[Linux-PowerEdge] DDP and IOPS
Hello, I can find many links on how to estimate the IOPS by kind of RAID, but I haven't found any for DDP on a MD34xx. I've found a technical paper, which proposes just qualitative feelings : http://www.dell.com/learn/us/en/04/shared-content~data-sheets~en/documents~dynamic_disk_pooling_technical_report.pdf How to compare DDP IOPS with other kind of RAID ? Thanks José-Marcio ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge
Dell R710 / H200 and Solaris
Hello, Sorry for the OT. I have some R710 with H200, and I'm installing Oracle Solaris on them. So far, so good, it works. But disk devices appear with a long random name : 83 - [r...@md3200-a] ~ # format Searching for disks...done AVAILABLE DISK SELECTIONS: 0. c0t3442CEA3ABF9D1A7d0 DEFAULT cyl 17766 alt 2 hd 255 sec 63 /p...@0,0/pci8086,3...@4/pci1028,1...@0/ip...@v0/d...@w3442cea3abf9d1a7,0 ... So, devices are accessed by these long random things : /dev/dsk/c0t3442CEA3ABF9D1A7d0 instead of the usual way /dev/dsk/c0t0d0 Is there a way to use the traditionnal references instead ? Thanks, JM -- ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: RAID Perc 5 monitoring
Jefferson Ogata wrote: megasasctl can send you periodic reports of health of all physical and logical disks. On SAS disks you can also check disk temperature and various other log pages, or initiate disk self-tests in disk firmware. One case where this is handy is when you're about to rotate a new disk in after a failure; it's nice to be able to do a long self-test of the new disk first so you don't have it fail in the middle of the rebuild. http://sourceforge.net/projects/megactl/ You may wish to build from SVN, particularly if you need PERC6 RAID6 support. I haven't made a new release since before I had one to work with. A Solaris/OpenSolaris version should be wonderful... ;-) -- --- Jose Marcio MARTINS DA CRUZ http://j-chkmail.ensmp.fr Ecole des Mines de Paris 60, bd Saint Michel 75272 - PARIS CEDEX 06 mailto:jose-marcio.mart...@mines-paristech.fr ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: SAS5/E with MD1000 for JBOD
Philip Tait wrote: We want to attach an MD1000 to a PE2900 in a non -RAID configuration. The Dell sales people are very convinced that we have to have a PERC6/E to connect an MD1000, but they are doing further research. We have two MD1000 attached to a PE2950. We have a PERC5/E. With the PERC5/E you can have RAID 0 (stripe). So, if I understood what you're wanting, you shall be able to create one RAID 0 volume for each disk, or a single RAID0 for all disks. In the meantime, I wondered if anyone on the list is actually using a SAS5/E to attach an MD1000, and can relate their experience? (Note that we want the drives to have standard partitioning, which would seem to make a PERC6/E unsuitable for this application.) Thanks for any comments, Philip J. Tait http://subarutelescope.org ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq -- ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
