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Re: [MooseFS-Users] ___SPAM___ [About] MFS disk use discussion (Raid or no Raid)
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From: Piotr R. K. <pio...@mo...> - 2015-12-21 12:37:37
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Hello, please take a look at Best practices (especially point 5: "JBOD and XFS for Chunkservers"): https://moosefs.com/documentation/best-practices.html Best regards, -- Piotr Robert Konopelko MooseFS Technical Support Engineer | moosefs.com <https://moosefs.com/> > On 21 Dec 2015, at 10:54 AM, Yves Réveillon - eurower.fr <yve...@eu...> wrote: > > Hi, > > no, dont convert them to RAID0 ! > > If a disk of RAID0 failed, all content of the volume are lost > (https://en.wikipedia.org/wiki/RAID <https://en.wikipedia.org/wiki/RAID>) > > Each disk must be independant (format each disk /dev/sdx for use as one). > > Next, add each disk on MFS. > > MFS will report (mfscgi) if a disk has a problem (latency etc ...), see > log files also and smart. > > With this configuration, if one disk fail, all others are ok with MFS. > > Best regards, > > Yves > > > Alexander Akhobadze a écrit : >> >> >> Hi >> You are right. Convert them into RAID0. >> >> Ахобадзе Александр >> akh...@ri... <mailto:akh...@ri...> <mailto:akh...@ri... <mailto:akh...@ri...>> >> >> ====================================================== >> Вы писали 20 декабря 2015 г., 9:26:56: >> ====================================================== >> >> Hi All >> >> I have a discussion. >> >> Now i used two mfs chuckserver to save Jboss log data . Server A and >> Server B. and mfs had good performance. >> >> Server A : 3 hard disk (each 2T Raid 5) >> Server B : 3 hard disk (each 500G Raid 5) >> >> i have a thought. why not remove server's raid and directly use each >> disk for mfs chuck. >> the reason is: >> 1, Raid is mostly used for keep data safe. But mfs already did it if >> you choose a good copy number. >> 2, Raid let the disk write slower than no raid for each disk. >> 3. Remove raid can got more disk space for mfs chuck. >> >> am i right? hope got response. >> ------------------------------------------------------------------------ >> >> ------------------------------------------------------------------------------ >> >> ------------------------------------------------------------------------ >> >> _________________________________________ >> moosefs-users mailing list >> moo...@li... <mailto:moo...@li...> >> https://lists.sourceforge.net/lists/listinfo/moosefs-users <https://lists.sourceforge.net/lists/listinfo/moosefs-users> >> > > > > ------------------------------------------------------------------------------ > _________________________________________ > moosefs-users mailing list > moo...@li... <mailto:moo...@li...> > https://lists.sourceforge.net/lists/listinfo/moosefs-users <https://lists.sourceforge.net/lists/listinfo/moosefs-users> |
