Hi Brian, Here more context about what I want to accomplish: I've migrated a bunch of services from AWS to a local server, but having everything in a single server is not safe, and instead of investing in RAID, I would like to start setting up a small Ceph Cluster to have redundancy and a robust mechanism in case any component fails. Also, in the mid-term, I do have plans to deploy a small OpenStack Cluster. Because of that, I would like to set up the first small Ceph Cluster that can scale as my needs grow, the idea is to have 3 OSD nodes with the same characteristics and add additional HDDs as needed, up to 5 HDD per OSD node, starting with 1 HDD per node. Thanks! On Thu, Oct 1, 2020 at 11:35 AM Brian Topping <brian.topping@xxxxxxxxx> wrote: > Welcome to Ceph! > > I think better questions to start with are “what are your objectives in > your study?” Is it just seeing Ceph run with many disks, or are you trying > to see how much performance you can get out of it with distributed disk? > What is your budget? Do you want to try different combinations of storage > devices to learn how they differ in performance or do you just want to jump > to the fastest things out there? > > One often doesn’t need a bunch of machines to determine that Ceph is a > really versatile and robust solution. I pretty regularly deploy Ceph on a > single node using Kubernetes and Rook. Some would ask “why would one ever > do that, just use direct storage!”. The answer is when I want to expand a > cluster, I am willing to have traded initial performance overhead for > letting Ceph distribute data at a later date. And the overhead is far lower > than one might think when there’s not a network bottleneck to deal with. I > do use direct storage on LVM when I have distributed workloads such as > Kafka that abstract storage that a service instance depends on. It doesn’t > make much sense in my mind for Kafka or Cassandra to use Ceph because I can > afford to lose nodes using those services. > > In other words, Ceph is virtualized storage. You have likely come to it > because your workloads need to be able to come up anywhere on your network > and reach that storage. How do you see those workloads exercising the > capabilities of Ceph? That’s where your interesting use cases come from, > and can help you better decide what the best lab platform is to get started. > > Hope that helps, Brian > > On Sep 29, 2020, at 12:44 AM, Ignacio Ocampo <nafiux@xxxxxxxxx> wrote: > > Hi All :), > > I would like to get your feedback about the components below to build a > PoC OSD Node (I will build 3 of these). > > SSD for OS. > NVMe for cache. > HDD for storage. > > The Supermicro motherboard has 2 10Gb cards, and I will use ECC memories. > > <image.png> > > Thanks for your feedback! > > -- > Ignacio Ocampo > > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > > > -- Ignacio Ocampo _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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