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Newbie
Posts: 7
Registered: ‎07-25-2012

Endurance cycle of NAND chip inside Sandisk Extreme SSD 240GB

Hello everybody !

I have recently purchase a Sandisk Extreme SSD 240GB.

Is everyone has information about the number of erase cycle that support nand chip inside it or the amount of data can be written to it before the cells dies.

 

Thanks

 

Tidason

SanDisk Guru
Posts: 4,227
Registered: ‎07-18-2007

Re: Endurance cycle of NAND chip inside Sandisk Extreme SSD 240GB

Newbie
Posts: 7
Registered: ‎07-25-2012

Re: Endurance cycle of NAND chip inside Sandisk Extreme SSD 240GB

Thanks a lot for this link. The topic seems to be so interesting. http://www.xtremesystems.org/forums/showthread.php?271063-SSD-Write-Endurance-25nm-Vs-34nm&p=5121415... 

Newbie
Posts: 1
Registered: ‎08-22-2012

Re: Endurance cycle of NAND chip inside Sandisk Extreme SSD 240GB

With regards to endurance, I am curious about the write cycle count if I began writing 10GB files to the drive until it filled up. We need to archive public meetings (audio/video) to the drive and never erase any files once they are written. Or to say it another way, if I have 24 sessions of plugging the drive in (stays turned off until needed) and writing 10GB per session, how many write cycles occur per NAND cell? I think the answer is 1, but I don't know how writes/erases happen for this memory type. Bottom line, reliability for reads from the device decades after files have been appended to the drive with no erase ever executed. Thanks!

SanDisk User
Posts: 29
Registered: ‎07-22-2012

Re: Endurance cycle of NAND chip inside Sandisk Extreme SSD 240GB

Do not rely on decades of archival storage on SSDs.

 

For that sort of archival storage, you should be using appropriate technology (maybe tape drive or blue ray) and appropriate care to maintain the archive. (multiple backups, move data to new tapes/disk as old devices age)

 

It isn't something you can just "slap" on a drive and chuck into the corner and forget about in 20 years ... if you want to ensure at least some data isn't lost along the way.

Newbie
Posts: 7
Registered: ‎07-25-2012

Re: Endurance cycle of NAND chip inside Sandisk Extreme SSD 240GB

Retention time of a nand chip seems to be less than 10 years, and it decrease when the cells are used (after important number of program/erase)

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SanDisk Senior User
Posts: 106
Registered: ‎10-24-2013

Re: Endurance cycle of NAND chip inside Sandisk Extreme SSD 240GB