FS SFP-10G-LR vs Cisco SFP-10G-SR

NOT EQUIVALENT

Specification matrix

ParameterCisco SFP-10G-SRFS SFP-10G-LR
Form FactorSFP+SFP+
Data Rate10 Gbps10 Gbps
MediaMMFSMF
Wavelength850 nm1310 nm
Reach300 m10000 m
Cost / Gbps$18.00$3.90

Planning storage for this link?

High-throughput SR links usually feed a NAS/SAN. Keep an offsite copy:

→ Backblaze B2 setup for high-throughput NAS/SAN storage

Sources