Originally Posted by plplplpl
Ooohh .. I'd warn you off about those.
I tried those exact models first.
1) They make an mSATA version that looks just like the m.2 sata and will ship you the wrong one by accident.. and either they are very fragile where static discharge is concerned or just arrived D.O.A.
2) They are 'cute' as in they look like a traditional SSD cover.. and offer some protection.. but learn from my mistakes.. they coop up the heat and don't dissapate it well. The trapped air and plastic cover tend to cook the m.2 chip.
I moved on to the Icydock vented plastic version.. and then on to the solid aluminum open air frame.
Inside the case open air is better as the air flow is 360 degrees above and underneath.
And its a rigid frame that is ever bit as strong as the steel frame the hard drive is mounted to inside the case.
I've been iterating.. trying different things for several weeks.. and personally made a lot of mistakes.
The tech is solid.. (use a Marvell adapter.. not a JMicron.. the JMicron are easy to find and sell for pennies.. but don't work.. thank the Tivo Community for figuring that out..)
It also depends on (how far) you want to go.
A simple m.2 to 2.5 SATA from fenlink costs about $10.. if you have a Maganavox 557 that may be all you need, in addition to the m.2 chip drive
A 3.5 to 2.5 SATA plus the m.2 to 2.5 SATA will total about $20.. if you have a modern DVR that needs a 3.5 SATA that is all you need, in addition to the m.2 chip drive.
A full IDE to 3.5 SATA adapter plus 3.5 to 2.5 SATA plus m.2 to 2.5 SATA will add up to about $36 (if you have an older DVR that needs a IDE 3.5 drive) in addition to the m.2 chip drive
The pics are of the last one I described.. but its the most flexible.. and the m.2 chip drives are physically interchangeable between all the above and fairly easy to extract from the DVR when they fill up so you can read them with a USB adapter to extract video to a PC.
I'm not even sure if bringing the 240 GB drive outside the cover of the DVR is a good idea. Its safer to leave them inside and it will take many hours of recording to even come close to filling one up.
Opening the case once a year to empty the drive is one approach.
Another thought is.. this is an experiment.. I have not been doing this long.
People have told me it would be insanely costly. But, $10 for 120 GB or $20 for 240 GB (today) is not bad in my opinion.. especially when you can't be sure if a spinning HDD will be damaged in shipping.. or be sure its not a refurb sold as a new drive.. when trying to get such a small drive.
It may be these m.2 will fail quicker.. but I seriously have my doubts about that.
I plan to audit the m.2 drives after installing a few and checking their wear life left after a month or two. m.2 has a finite write cycle lifespan and will report that if queried outside the case in a PC.
Life left is not an unknown thing for m.2.. they know precisely how many times each cell has been used.. and how much reallocation space is left. Spinning drives come from a time when precise lifespan was more of a guess.. Back then hardware rarely checked SMART statistics or warned the end user.
Its a different world now.
Helping the Isobuster test his program.. I have accumulated a number of DVRs.. I still have them and plan to try this in each. It will take some time.. maybe not so long for this thread.. which is primarily about the Magnavoxes.. but for Toshiba, Pioneer.. Panasonic.. it will take longer.
So your personal mileage with this idea.. may vary.