Network also matters. It would take a lot of time sending 6TB over 1Gb link, even fully saturating it. IMHO You can try with 10Gb, but you will need to raise your streaming/compaction limits a lot. Also you will need to ensure that your compaction can keep up. It is often done in one thread and I am not sure if it will be enough for you. As of parallel compaction, I don't know exact limitations and if it will be working in your case.
2012/9/18 Casey Deccio <ca...@deccio.net> > On Tue, Sep 18, 2012 at 1:54 AM, aaron morton <aa...@thelastpickle.com>wrote: > >> each with several disks having large capacity, totaling 10 - 12 TB. Is >> this (another) bad idea? >> >> Yes. Very bad. >> If you had 6TB on average system with spinning disks you would measure >> duration of repairs and compactions in days. >> >> If you want to store 12 TB of data you will need more machines. >> >> > > Would it help if I partitioned the computing resources of my physical > machines into VMs? For example, I put four VMs on each of three virtual > machines, each with a dedicated 2TB drive. I can now have four tokens in > the ring and a RF of 3. And of course, I can arrange them into a way that > makes the most sense. Is this getting any better, or am I missing the > point? > > Casey > -- Best regards, Vitalii Tymchyshyn
