HPE has determined an issue with certain HPE SAS Solid State Drives (SSDs) which have a bug in their firmware causing a drive failure at 32,768 hours of operation. A critical patch has been releases to address the issue.
More information: https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-a00092491en_us
A complete list of firmware updates of all Intel-based Macs can be found here, together with download links: