<Li> The disks are likely to have similar serial numbers, thus they may share any manufacturing flaws affecting production of the same batch . </Li> <Li> The disks are likely to have been shipped at the same time, thus they are likely to have suffered from the same transportation damage . </Li> <Li> As installed both disks are attached to the same power supply, making them vulnerable to the same power supply issues . </Li> <Li> As installed both disks are in the same case, making them vulnerable to the same overheating events . </Li>

The three classes of fire most common in healthcare settings