Broadcom LSI 9285‑8e PCIe2.0 SAS2208 RAID Controller (8 External Ports Only, Flashable IT HBA)

Basic Parameter Table

Core Product Features

1. Enterprise dedicated external-only RAID controller with SAS2208 chip, large capacity onboard cache improves random write performance for external JBOD expansion storage arrays; zero internal drive connectors, designed exclusively for external disk enclosures.
2. Single SFF-8088 external connector supports up to 8 SATA/SAS drives via external expansion cabinets; PCIe2.0 x8 bus meets bandwidth demands of multi-disk external storage pools.
3. Dual flexible deployment modes:
   • IR RAID Mode: Full hardware RAID acceleration with large cache memory, built-in disk redundancy protection, suitable for enterprise storage servers that only deploy external SAS JBOD arrays without internal hard disk bays.
   • IT Pass-through Mode (firmware reflash required): Disable native RAID logic, OS fully independently controls each single disk, fully compatible with ZFS RAID-Z, unRAID, FreeNAS external mass storage systems.
4. Fanless passive white fin heatsink, stable 24/7 uninterrupted operation for rack storage servers; full-height & low-profile mounting brackets included.
5. External hard drive hot-swap supported after IT firmware flash, all external storage devices directly exposed to host operating system.
6. Mid-range dedicated external expansion RAID card, larger cache than entry-level 9280-8e, balanced cost and performance, mainstream option for enterprise external centralized storage and mid-size external JBOD DIY NAS after IT flashing.

Application Scenarios

1. Native IR RAID deployment: Enterprise storage servers relying solely on external SAS JBOD expansion disk arrays, no internal hard drives equipped.
2. IT-flashed HBA deployment: Mid-size 8-bay external ZFS TrueNAS media storage, virtualization external mass storage backend, medium-capacity home lab storage with external expansion enclosures.