It appears you have not yet registered with our community. To register please click here...

 
Go Back [M] > Madshrimps > WebNews
The SSD Relapse: Understanding and Choosing the Best SSD The SSD Relapse: Understanding and Choosing the Best SSD
FAQ Members List Calendar Search Today's Posts Mark Forums Read


The SSD Relapse: Understanding and Choosing the Best SSD
Reply
 
Thread Tools
Old 31st August 2009, 13:26   #1
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 79,002
jmke has disabled reputation
Default The SSD Relapse: Understanding and Choosing the Best SSD

The falling performance was actually a side effect of the way NAND flash works. You write in pages (4KB) but you can only erase in blocks (128 pages or 512KB); thus SSDs don't erase data when you delete it, only when they run out of space to write internally. When that time comes, you run into a nasty situation called the read-modify-write. Here, even to just write 4KB, the controller must read an entire block (512KB), update the single page, and write the entire block back out. Instead of writing 4KB, the controller has to actually write 512KB - a much slower operation.

http://anandtech.com/storage/showdoc.aspx?i=3631
__________________
jmke is offline   Reply With Quote
Old 31st August 2009, 14:29   #2
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 79,002
jmke has disabled reputation
Default

Quote:
Holycrapwtfbbq?
lol
__________________
jmke is offline   Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


All times are GMT +1. The time now is 21:28.


Powered by vBulletin® - Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO