Storage Sizing

This section provides some guidelines for sizing the disk according to the traffic throughput and desired data retention.

The table below highlights the minimum requirements for a storage able to dump traffic according to the sustained traffic throughput. Please note that medium/high end enterprise disks are considered, with high write throughput designed for endurance. RAID 0 is considered here, more disks are required with parity (e.g. with RAID 5/50/6).

Traffic Throughput	Min # SAS/SATA HDD	Min # SSD	Min # NVMe
1 Gbps	1-2	1	1
10 Gbps	8-10	4	1
40 Gbps	24-32	16	4
100 Gbps			8

Note: a single NVMe disk can handle up to 35 Gbps, numbers reported in the above table have been produced considering average disks capable of 15-20 Gbps, to fit most hardware configurations using not the fastest disks on the market. The same applies to spinning HDDs and SSDs.

The table below highlights the minimum requirements for a storage able to dump traffic according to the desired data retention and considering the worst case sustained traffic throughput. Please note that the minimum number of disks based on the traffic throughput of the table above should be used in any case.

Traffic Throughput	Data per Hour	Data per Day	Data per Week
1 Gbps	500 GB	10 TB	70 TB
10 Gbps	5 TB	100 TB	700 TB
40 Gbps	20 TB	400 TB	2.8 PB
100 Gbps	50 TB	1 PB	7 PB