What tool should you use to check a drive behind a RAID controller?

• A. Vendor utilities (ssacli, storcli, MegaCLI)
• B. Operating system SMART viewer
• C. BIOS RAID health screen
• D. Disk optimization tool

Answer: (A)

When drives are connected through a hardware RAID controller, you need tools that talk directly to that controller to get accurate health and status data. Vendor utilities like ssacli, storcli, or MegaCLI are designed for this purpose. They query the RAID controller firmware and report on each physical drive’s health,SMART attributes, slot location, firmware version, and status (healthy, degraded, rebuilding, etc.). This per-drive visibility is essential because the OS often sees only virtual disks and may not expose reliable SMART data for individual drives behind the controller.

A BIOS RAID health screen can show basic status, but it’s limited and not suitable for ongoing monitoring or automation. An operating system SMART viewer typically can’t access the SMART data for drives behind a hardware controller in a meaningful way, since the drives aren’t presented to the OS as individual devices. Disk optimization tools are unrelated to drive health monitoring and won’t provide the needed health details.

So, the best choice is to use vendor utilities to check drives behind a RAID controller.