Execute the following command from the cm of the node that shows disk failĬheck to see if the disk is mounted on the node.Ĭheck for offline disks using NCC check disk_online_check. In the Diagram view, you can see red or grey for the missing disk.Ĭheck the alerts in the Prism web console for the disk alerts, or use the following command from any of the working CVMs in the cluster to check for disks that have generated the failure messages.Ĭheck to see if the disk is being recognized by the black plane. The following can be observed when a disk fail occurs.ĭisk is shown as a red or a plain grey in prismĪ critical error in Prism stating the disk went bad.Ĭheck the Prism web console for the failed disk. When a drive on a host (SSD or HDD) experiencing a recoverable errors, warnings or a complete hardware failure, the stargate service will mark the disk as bad. X-Ray Performance & Reliability Tests 22.It works great as long as there are sectors left in the reserve pool.

Nowadays, the disk is managed by a microcontroller on the drive itself, and that microcontroller keeps track of bad sectors and 'swaps in' good sectors from a reserve pool.

NCM Intelligent Operations (formerly Prism Pro/Ultimate) 414 ServeTheHome is the IT professionals guide to servers, storage, networking, and high-end workstation hardware, plus. In the old days, you could 'mark' bad disk sectors so that they wouldn't be used.

Mark disk