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Wednesday, May 22, 2013
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Comments
ISP problems by: Anshel Sag on 12/9/2009
The ISP we're currently hosted with is having problems. We've been experiencing issues in the past few days that are more noticeable on your guys' end. As a result, we're going to speed up our switch of ISPs even faster than we had initially planned.
Your offline? by: Anonymous on 12/9/2009
How come your offline and then back on over the past few days?

Isn't anybody watching the server?
You've completely failed by: Anonymous on 12/9/2009
to understand what TRIM is for. It's NOT there to reduce the number of SSD writes or the amount of data deleted. It's function is to allow the controller to maximise the number of flash memory blocks in the pool of free memory.

If the OS is done with a sector then, under normal circumstances, an SSD has no way of knowing this and will consider the block on which it resides to be still in use. When a sector is written the SSD will first try to find an unused block onto which it can be written. If there isn't one then it will have to read all of a partially written block into cache memory before adding the new data and writing the whole block out again. This process slows the SSD down considerably.

With TRIM there to help the SSD can identify more blocks that are effectively unused and can be overwritten without the need for a read first. Also the more free blocks there are in the pool the better wear levelling can work to spread writes over the available space. This increases drive life without changing the number of writes to the drive.
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