Dear listers,
my employer already has a production Ceph cluster running but we need a
second one. I just wanted to ask your opininion on the following setup.
It is planned for 500 TB net capacity, expandable to 2 PB. I expect the
number of OSD servers to double in the next 4 years. Erasure Code 3:2
will be used for OSDs. Usage will be file storage, Rados block devices
and S3:
5x OSD servers (12x18 TB Toshiba MG09SCA18TE SAS spinning disks for
data, 2x512 GB Samsung PM9A1 M.2 NVME SSD 0,55 DWPD for system, 1xAMD
7313P CPU with 16 cores @3GHz, 256 GB RAM, LSI SAS 9500 HBA, Broadcom
P425G network adapter 4x25 Gbit/s)
3x MON servers (1x2 TB Samsung PM9A1 M.2 NVME SSD 0,55 DWPD for system,
2x1.6TB Kioxia CD6-V SSD 3.0 DWPD for data, 2x Broadcom P210/N210
network 4x10 GBit/s, 1xAMD 7232P CPU with 8 cores @3.1 GHz, 64 GB RAM)
3x MDS servers (1x2 TB Samsung PM9A1 M.2 NVME SSD 0,55 DWPD for system,
2x1.6 TB Kioxia CD6-V SSD 3.0 DWPD for data, 2x Broadcom P210/N210
network 4x10 GBit/s, 1xAMD 7313P CPU with 16 cores @3 GHz, 128 GB RAM)
OSD servers will be connected via 2x25 GBit fibre interfaces "backend" to
2x Mikrotik CRS518-16XS-2XQ (which are connected for high-availability
via 100 GBit)
For the "frontend" connection to servers/clients via 2x10 GBit we're
looking into
3x Mikrotik CRS326-24S+2Q+RM (which are connected for high-availability
via 40 GBit)
Especially for the "frontend" switches i'm looking for alternatives.
Currently we use Huawei C6810-32T16A4Q-LI models with 2x33 LACP
connections connected via 10 GBit/s RJ45. But those had ports blocking
after a number of errors which resulted in some trouble. We'd like to
avoid IOS and clones in general and would prefer a decent web interface.
Any comments/recommendations?
Best regards,
Kai
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