Hi, We'll be building our first production-grade ceph cluster to back an openstack setup (a few hundreds of VMs). Initially we'll need only about 20-30TB of storage, but that's likely to grow. I'm unsure about required IOPs (there are multiple, very different classes of workloads to consider). Currently we use a mixture of on-blade disks and commercial storage solutions (NetApp and EMC).
We're a Cisco UCS shop for compute and I would like to know if anyone here has experience with the C3160 storage server Cisco offers. Any particular pitfalls to avoid? I would like to use SSD for journals, but I'm not sure what's the performance (and durability) of the UCS-C3X60-12G0400 really is. What's considered a reasonable ratio of HDD to journal SSD? 5:1, 4:1? kind regards Pshem
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