Comment Single component failure not a big deal any more. (Score 5, Informative) 172
I think that the wide range adoption of server SSDs also shows how far server installations have progressed toward eliminating all single points of failure.
In the passt HA and 'five nines' was something only done by a few niches, like telephony provider switches or banking big iron. Today it is common in many cloud installations and most sizeable server setups. A single component failing will not stop your service.
If your business can support the extra cost for the SSDs, a failing drive will not stop you and the performance of the service will see great improvements anyway. The power savings may even make the SSD not so costly after all.