Traffic cache hardware

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This is an overview of our currently deployed and active cache hardware at the Traffic layer.

Deployed Hardware Classes

We have purchased and retired multiple classes of server hardware over the years in staggered timeframes. In the general case we'll always have multiple overlapping classes of hardware as various warranty and support periods expire. These are the currently-active hardware configuration classes:

Label	CPU Type/Speed	Phys Cores	RAM	Storage
A	2x Xeon E5-2680 0 @ 2.70GHz	16	96 GB	2x Seagate ST9250610NS 250GB HDD
B	2x Xeon E5-2640 0 @ 2.50GHz	12	96 GB	2x Intel M320 600GB SSD
C	2x Xeon E5-2680 0 @ 2.70GHz	16	192 GB	2x Intel S3700 400GB SSD
D	2x Xeon E5-2680 v3 @ 2.50GHz	24	256 GB	2x Intel S3700 400GB SSD

Deployed Server Hardware by Datacenter and Cluster

Datacenter	text	upload	maps	misc	total
eqiad	8xC	7xC + 4xD	4xC	4xC	23xC + 4xD = 27
codfw	8xD	10xD	4xD	4xD	26xD = 26
esams	8xD	12xD	4xB	4xB	20xD + 8xB = 28
ulsfo	6xC	6xC	4xC	4xA	16xC + 4xA = 20
total	14xC + 16xD = 30	13xC + 26xD = 39	4xB + 8xC + 4xD = 16	4xA + 4xB + 4xC + 4xD = 16	4xA + 8xB + 39xC + 50xD = 101