[Q] What files to move to Class 10 SD card

---

Im thinking about going to ext4 and got a Class10 SD card to make the change at the same time.

Are people re-partitioning, or growing/shrinking/moving their partitions for swap or cache - and/or moving them or specific apps to the SD card ? Seems like the class 10 SD card is about 2x as fast if numbers are to be believed, but I cant be sure.

I spent hours checking these forums and the net and just figured I'd post to see what you guys knew about this....thanks in advance for your help.

All class 10 means is that once the card fragments the minimum will be 10mb/sec...not that its 2x faster...

In reality a Class 2 can and usually does run as fast as a Class 10..but once both card begin to fragment, Class 2 will be over 2mb/sec and Class 10 will be over 10mb/sec..

Originally Posted by gTen

All class 10 means is that once the card fragments the minimum will be 10mb/sec...not that its 2x faster...

In reality a Class 2 can and usually does run as fast as a Class 10..but once both card begin to fragment, Class 2 will be over 2mb/sec and Class 10 will be over 10mb/sec..

I run through (download/delete) files on my sdcard like crazy-- given your info, is it good practice to defragment it every once in a while?

I think on the evo forums i read that htc said that the evo only workks at class 4 speeds. Maybe you should shoot samsung an email and find out what the epic supports. In the interest of full disclosure, i have a faulty memory and i could have dreamed that. Im not sure.

Sent from my nook COLOR.

I was under the impression that fragmentation is irrelevant on flash media. I was also under the impression that de-fragmenting flash media is a bad thing because all it does is reduce the life-cycle of the media.

Dropping in a tiny bit of research.. funny analogy:

From: ssj3strife
from: http://forum.cyanogenmod.com/topic/2890-how-to-defrag-your-microsd-card/page__st__20

"While fragmentation is never ideal, there are some scenarios where its effects are detrimental and significant, and there are other scenarios where its effects are negligible. Flash media is the latter.

A bad analogy for this - I wish I could come up with a better one - would be if you brought a harpoon gun with you when you visited the local swimming pool, because you were worried about sharks. It is true that if you were in the ocean, a harpoon gun might be a handy thing to have. At the local pool however, not only is having a harpoon gun completely unnecessary, but it's also a very real possibility that using your harpoon gun at the local pool will get you into a lot of trouble.

And now for some actual backup for my argument, rather than just posting a picture hosted on Picasa, I Googled the term "defragment flash media," and here are the first three relevant links. Each one gives the same message - don't defragment your flash media."

The rest of the thread explains it pretty clearly.