There are no advantages for JBOD over RAID0. RAID0 is far superior when using striped reads/writes, that is, you can add up the read/write performance of all the physical drives when using a hardware RAID controller. JBOD is limited to single physical drive performance .
There is only one rare case, if you want to mix physical drives with different volume capacity, where RAID0 striping can not be applied. Then JBOD adds up all the volumes of the drives where striped RAID0 uses the smallest drive capacity only. And you are correct, in either case losing a drive means failure of a machine. ES solves node failures by replica shards on other machines, not by a file-based repairing strategy. Jörg On Fri, Jan 23, 2015 at 12:38 AM, Mark Walkom <[email protected]> wrote: > You will lose all data if one drive dies and you use ES striping or RAID0. > > I don't know if there is a practical (throughput) difference, but > logically they are the same. > > On 23 January 2015 at 10:21, Shaun Senecal <[email protected]> wrote: > >> What is the advantage of using ElasticSearch's distributors (JBOD) over >> using raid0? >> >> As far as I can tell, if I lose a drive in either case I lose the whole >> node until the data can be recovered. Is the distributor smart about which >> files it recovers and only recovers the files that were on the failed >> drive? Is there some other advantage I am missing? >> >> >> Shaun >> >> -- >> You received this message because you are subscribed to the Google Groups >> "elasticsearch" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/elasticsearch/4d9091bb-a472-466d-9e68-83fad57c5449%40googlegroups.com >> . >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/CAEYi1X807P06tm%2Bb7Umt_kFRfV5xNjxbtLghL3VAprG0w9SZnA%40mail.gmail.com > <https://groups.google.com/d/msgid/elasticsearch/CAEYi1X807P06tm%2Bb7Umt_kFRfV5xNjxbtLghL3VAprG0w9SZnA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAKdsXoG3tvLNqQ-iO%2B3Wdvexb34BoXB2wHoR1dcDhDB4R9x%3DHw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
