Lenovo Enterprise SSDs and Transfer Speeds
Lenovo / IBM have a couple of oddball transfer speeds in their SSD lineup, so we put together a quick cheat sheet of how the SSD Enterprise categories look.
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Just a note on these transfer speeds.
Generally for these drives:
- SATA = 6Gbps
- SAS = 12Gbps
- PCIe = 4GBps
GBps with PCIe does not equal Gbps with SAS and SATA
PCIe technology enables interface speeds of up to 1GB/s per client lane (PCIe 3.0), versus today’s SATA technology speeds of up to 0.6GB/s (SATA 3.0).
More lanes from SATA require more SATA devices, but PCIe bandwidth can be scaled up to 16 lanes on a one device.
A gigabit (Gb) equals 1,000,000,000 bits. When it’s written as Gbps (short for Gigabits per second) transfer rates are 1,000,000,000 bits per second.
When it’s written as GBps (short for Gigabytes per second). Transfer rates are 8000 million bits per second.
So, one gigabit is equal to 1 million bits, and one gigabyte is equal to 8000 million bits.