Hi Dave, Are you suggesting to use historical Solr master/slave architecture ?
In Sorlcloud / SolrJ architecture this can be achieved by creating only TLOG replicas then FORCELEADER located on a specific server (then indexing server) and search only on TLOG replicas with the parameter "shards.preference=replica.type:TLOG". Is this what you are suggesting ? Regards Dominique Le ven. 7 oct. 2022 à 00:59, Dave <hastings.recurs...@gmail.com> a écrit : > You should never index directly into your query servers by the way. Index > to the indexing server and replicate out to you query servers and tune each > as needed > > > On Oct 6, 2022, at 6:52 PM, Dominique Bejean <dominique.bej...@eolya.fr> > wrote: > > > > Thank you Dima, > > > > Updates are highly multi-threaded batch processes at any time. > > We won't have all index in RAM cache > > Disks are SSD > > > > Dominique > > > > > >> Le ven. 7 oct. 2022 à 00:28, dmitri maziuk <dmitri.maz...@gmail.com> a > >> écrit : > >> > >>> On 2022-10-06 4:54 PM, Dominique Bejean wrote: > >>> > >>> Storage configuration is the second point that I would like to > >> investigate > >>> in order to better share disk resources. > >>> Instead have one single RAID 6 volume, isn't it better to have one > >> distinct > >>> not RAID volume per Solr node (if multiple Solr nodes are running on > the > >>> server) or multiple not RAID volumes use by a single Solr JVM (if only > >> one > >>> Solr node is running on the server) ? > >> > >> The best option is to have the indexes in RAM cache. The 2nd best option > >> is the 2-level cache w/ RAM + SSD -- that's what you get with ZFS, and > >> you can use the cheaper HDDs for primary storage. The next one is all > >> SSDs -- in that case RAID-1(0) may give you better read performance than > >> a dedicated drive, but probably not enough to notice. There's very > >> little point in going RAID-5 or 6 on SSDs. > >> > >> In terms of performance RAID5/6 on HDDs is likely the worst option, and > >> a single RAID6 volume is also the works option in terms of flexibility > >> and maintenance. If your customer doesn't have money to fill those slots > >> with SSDs, I'd probably go with one small SSD for system + swap, a > >> 4-disk RAID-10, and a hot spare for it. > >> > >> Dima > >> > >> >
