A RAID controller for your server protects data and boosts storage performance across your drive array. We stock Dell PERC, HPE Smart Array, and LSI/Broadcom MegaRAID controllers and HBAs, plus the cache modules and battery/flash backup units that go with them. Adding a controller to a server? We confirm slot, cabling, and drive-mode (RAID vs. HBA/IT) compatibility with your backplane so it works the first time. New and certified-refurbished, tested, with a 3-Year Warranty.
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We carry the full storage-controller ecosystem: Dell PERC, HPE Smart Array, Broadcom/LSI MegaRAID, and plain HBAs for software-defined storage (ZFS, Ceph, Storage Spaces) where the OS — not the card — manages redundancy. Just as important are the consumables around them: cache batteries (BBU) and flash-backed write cache modules degrade on a schedule and silently disable write-back caching when they fail, dropping array performance sharply.
If your monitoring reports a cache battery fault or write-back disabled, the fix is usually a sub-$100 battery — one of the highest performance-per-dollar repairs in server hardware. Send the controller model and we will pinpoint the right battery or capacitor module.
Hardware RAID (PERC, Smart Array, MegaRAID) when the controller manages the array; a plain HBA in IT mode when software like ZFS, Ceph, or vSAN needs direct drive access. Mixing the two models causes problems.
Controllers disable write-back caching when the cache battery fails to protect in-flight data, falling back to much slower write-through mode. Replacing the battery restores full performance.
Same-family replacements (e.g. PERC to a compatible PERC) typically import the existing array configuration from the drives. We will confirm import compatibility for your exact models before you order.