[ddots-l] Re: Can I make by Sonar files smaller by....
- From: Bryan Smart <bryansmart@xxxxxxxxxxxxxx>
- To: "ddots-l@xxxxxxxxxxxxx" <ddots-l@xxxxxxxxxxxxx>
- Date: Sat, 29 May 2010 00:12:36 -0400
Chris, sure, please repost to who-ever can use the info.
When you look at a flash device at an online store, the specs should say if the
flash is SLC or MLC. Flash cells are expensive. To bring costs down, MLC
devices use a technique that lets them store more than one piece of data in a
single cell. That generally works fine when the data is frequently rewritten,
but any degradation in the stored electrical charge over time means that the
multiple stored pieces of data sort of bleed in to each other. MLC is also
slower. If you want to rewrite one piece of data in a cell, the device must,
behind the scenes, read everything out of the cell that is in it at the moment,
and then write the entire cell back with your new piece of data as part of the
write operation. On an sLC device, your new data is just written straight in to
the cell, overwriting what is already there.
Most cheap flash drives, SD cards, and cell phones use the cheaper MLC memory.
MLC is still pretty good. It will stand up to water, temperature, and physical
shock in ways that hard drives won't. You can zap it with magnets that would
wipe out tape, and it will be fine. It just isn't good for tossing in a box,
and coming back to in 10 or 30 years.
Bryan
-----Original Message-----
From: ddots-l-bounce@xxxxxxxxxxxxx [mailto:ddots-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Chris Smart
Sent: Friday, May 28, 2010 12:17 PM
To: ddots-l@xxxxxxxxxxxxx
Subject: [ddots-l] Re: Can I make by Sonar files smaller by....
Brian, what an excellent post! Mind if I cross-post it to the jSonar list?
What SLC type flash device would you recommend?
I'm only familiar with the tiny SD cards - I have a 16GB one in my Edirol R9HR
recorder. Is that the sort of thing you're talking about?
Can you recommend any brands or types of slc?
thanks
Chris
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