Dell PERC H745 4GB NV Cache Low-Profile PCIe RAID Controller — 4TJGJ

The PERC H745 is a low profile RAID controller with 4GB of non-volatile cache, sold under Dell part number 4TJGJ.

Because the cache is non-volatile, cached writes are designed to survive a power cut, so write-back mode can stay on. It is the low-profile PCIe card form of the controller. Set-up happens in the controller’s pre-boot utility, and arrays can be managed later from the operating system. As a Dell PERC it is intended for PowerEdge servers; check your server’s supported controller list. Controllers of the same family can usually take over an existing array from its drives, but check firmware levels before swapping one for another. Drives connect through the server’s backplane, so the controller has to suit the backplane it is cabled to. Disk and array health show up in the server’s hardware management logs. Matching the Dell part number 4TJGJ against your system's parts list is the surest way to confirm the controller fits.

Condition is certified refurbished, and each part is inspected, bench-tested and checked in Johannesburg.