Background The recurrence of sentinel events (SEs) is a persistent problem worldwide. despite repeated analyses and recommendations formulated to prevent recurrence. Research suggests this is partly attributable to the quality of the recommendations. and determining if a recommendation will be effective is not yet covered by an adequate guideline. https://www.roneverhart.com/Western-Digital-Re-WD6001FSYZ-6TB-7-2K-RPM-SATA-6Gb-s-128MB-3-5-Hard-Drive/