I bet you they also bought all the same make, model, and batch/vintage drives. If you are building a storage array, do not do this. Ensure that you are using

I bet you they also bought all the same make, model, and batch/vintage drives. If you are building a storage array, do not do this. Ensure that you are using a variety of drive types (obviously same size and interface technology). Doing so guards against the danger of too many drives going wrong at the same time (within the same time window) causing a failure from which it is impossible to recover.