SAS Expanders
SAS expander cards multiply the drive count a single controller can address — the affordable path to high-density storage servers. Tested pulls, matched to common Dell and HPE backplane layouts.
SAS Expanders — More Drives per Controller
A SAS expander is the multiplier in a storage server: it lets one RAID controller or HBA address far more drives than its own ports allow, which is how 12-, 24-, and 36-bay chassis run from a single 8-port card. We stock tested expander cards and expander-equipped backplane hardware for Dell, HPE, and custom Supermicro-style builds.
How the Pieces Fit
- Controller → expander → drives: the controller uplinks to the expander over one or two SAS cables; the expander fans out to the backplane and its bays.
- Bandwidth: uplink lanes are shared — fine for HDD arrays and most SSD tiers; latency-critical NVMe takes a different path entirely.
- Compatibility: match SAS generation (6G/12G) across controller, expander, and drives; SATA drives work behind SAS expanders, not the other way around.
Why Buy SAS Expanders from PCSP
- Tested pulls from working systems, verified before listing.
- Matched: tell us your chassis and controller and we confirm the expander, cables, and drives as one working set.
- 90-day returns on DOA or non-conforming parts.
- Fast shipping: in-stock parts ship the same business day when ordered before 1:00 pm EST.