Yes, I saw an abilities librados. I will postpone as a last resort. I look for the ready decision.
Purchase is planned. That Intel S3710 serie, 1:4 to 6TB SATA drives The truth is their cost 78 SSD in rubles turns scary :) but that's another story ... Is there a quick turnkey solutions for Win clients? >Пятница, 12 августа 2016, 11:08 +03:00 от Maxime Guyot ><maxime.gu...@elits.com>: > >Hi, > >> “Clients run program written by them, which generates files of various sizes >>- from 1 KB to 200 GB” >If the clients are running custom software on Windows and if at all possible, >I would consider using librados . The library is available for C/C++, Java, >PHP and Python. The object API is fairly simple and would lift the CephFS >requirement. >Using Rados your client will be able to talk directly to the cluster (OSDs). > >Some other options to access Ceph form Windows, but require a gateway (CephFS >to NFS/Samba or RBD to NFS/Samba) which usually ends up being a bottleneck and >a SPOF. > >Regarding the performance, you mentioned 160GB/min, so that is 2.7 GB/s. That >shouldn’t be too difficult to reach with Journals on SSDs. >In a previous thread you mentioned 468 OSDs. Doing a quick napkin calculation >with a Journal:OSD ratio of 1:6 (usually 1:4 to 1:6), that should be 78 >Journals, if you estimate 400MB/s (like the Intel S3710 serie) Journal write >speed and a replica factor of 3, you have a maximum theoretical write speed of >~10GB/s. Say you get ~50% (I usually reach 50~60% of the theoretical write >speed) of the theoretical write speed you are still above your target of 2.7 >GB/s. > >Regards >Maxime G. > > >From: ceph-users < ceph-users-boun...@lists.ceph.com > on behalf of Nick Fisk >< n...@fisk.me.uk > >Reply-To: "n...@fisk.me.uk" < n...@fisk.me.uk > >Date: Friday 12 August 2016 09:33 >To: 'Александр Пивушков' < p...@mail.ru >, 'ceph-users' < >ceph-users@lists.ceph.com > >Subject: Re: [ceph-users] High-performance way for access Windows of users to >Ceph. > >I’m not sure how stable that ceph dokan is, I would imagine the best way to >present ceph-fs to windows users would be through samba. > >From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of >????????? ???????? >Sent: 12 August 2016 07:53 >To: ceph-users < ceph-users@lists.ceph.com > >Subject: [ceph-users] High-performance way for access Windows of users to Ceph. > >Hello, >I continue to design high-performance cluster Ceph, petascale. >Scheduled to purchase a high-performance server, OS Windows 2016, for >clients. Clients are in the Dockers. >https://docs.docker.com/engine/installation/windows/ >Virtualization. It does not matter... > Clients run program written by them, which generates files of various sizes - >from 1 KB to 200 GB (yes, creepy single file size). Network planning to use >Infiniband 40 GB/s between clients and Ceph. Clients work with Ceph always on >one, and always only either for record or for reading. >While I do not understand what Ceph technology is appropriate to use? Object, >block, or file storage CephFS. >So far, it seems to me, i need to use MDS, CephFS and ceph-dokan >https://github.com/ketor/ceph-dokan > >Please share the experience of how it is possible to provide access with >minimal overhead (preferably zero :( ) Windows Ceph users to the server? > Ie how to make sure that the files generated by the program on Windows very >quickly proved to Ceph. > >-- >Александр Пивушков > -- Александр Пивушков
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