I have had a Mid 2013 13" Macbook Air for a couple of years but have barely used it as I am more of a Windows person. However, one of the things that has bothered me a bit since owning it is that the Unexpected Power Loss Count attribute on the SSD is constantly spiking, going up by several thousand per hour. It makes no difference whether the laptop is plugged in or not.
I have disabled the Put hard disks to sleep when possible and I think it may have reduced the problem a little but I'm not 100% sure.
Currently I am running OS X 10.9 Mavericks. The SSD is listed as
Apple SSD SD0128F which is known to be a SanDisk model. Here is the data from an app called SSD health:
Disk Utility has similar values although they are displayed in hexadecimal.
Whilst I realise that the raw values are not necessarily something to trust, it is nevertheless my understanding that increasing values for this attribute can indicate some kind of problem and can indicate a risk of data loss. Certainly this seems to be the case on Windows machines where the raw value is normally kept very low and associated with machines not being shut down properly or a driver issue.
I was hoping someone with a Macbook Air and similar Sandisk
SD0XXXF type SSD could check their data to compare it to mine. The laptop is coming up to the end of its two year warranty so if there is an issue I would like to get it fixed soon.