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What are the key similarities and differences between the Rocket 1624A and Rocket 7624A NVMe adapters?
1. Shared Feature - Identical Hardware Core (Broadcom Gen5 Switch)
Both the Rocket 1624A and 7624A are built upon the same Broadcom PEX89048 PCIe Gen5 Switch IC. Bandwidth: Both offer a full PCIe 5.0 x16 host interface, providing up to 32 GB/s of aggregate throughput.
2. Shared Feature - Physical Connectivity:
Both adapters feature dual MCIO (SFF-TA-1016) ports, and can directly support up to 8 NVMe devices (4 per port) via a variety of high-density cabling accessories.
3. The Key Difference: Driver Flexibility
The primary "Value-Add" of the Rocket 7624A is its dual-mode driver support, which isn't present in the baseline 1600 series:
· Rocket 1624A (Switch Series): Designed as a "pure switch." It relies exclusively on Native OS NVMe drivers. It does not include HighPoint’s proprietary RAID stack.
· Rocket 7624A (RAID/Pro Series): Designed as a hybrid solution, the Rocjet 7624A can function exactly like a Rocket 1624A using Native Drivers (for software RAID like ZFS, mdadm, or Storage Spaces), but it also enables administrators to use HighPoint’s Hardware-Accelerated RAID 0, 1, and 10 technology.
The comparison between the Rocket 1624A and 7624A makes the differences much easier to understand, especially the added RAID flexibility of the 7624A. I also found the explanation of the shared PCIe Gen5 architecture useful because it shows where the two adapters are similar before getting into the driver differences. It’s a good example of how choosing the right hardware depends on the intended setup, just like selecting dumb and dumber costumes for couples depends on the occasion and the look you want. Overall, a clear and useful comparison for anyone considering these adapters.