So I have read many of the threads on defragging and SSD. Don't do it. Not needed. Could wear the drive out.....etc.Situation: I just reinstalled FSX after a W7 upgrade. My new hard disk layout is to have the OS on a Velociraptor and have placed FSX on its "own" drive, an OCZ 250gb. This unit has the 1.40 firmware that supports TRIM, and I have checked the W7 install to assure myself that TRIM is also present there. As might be expected, the FSX drive, when analyzed by O&O Defrag 12.??, shows a 53% fragmentation. I have done the normal "Space, Space, Name, Name" defrag on all of the other drives in the system, but have not touched the SSD. The SSD performance seems to be there, i.e. I have a significantly reduced initial load time, and have not run into any slowdown in the sim when panning or high rate turns. So the SSD is doing what it is supposed to, but.............................................man, it just goes against the grain to see all of that fragmentation.So as most of you know, after following Nick's guide on the use of O & O, the initial install is quite a mess; but after you have everything loaded, the fragmentation virtually ceases. My question, should I defrag the drive now that I have all of the GEX, UTX, REX, FTX, OZx.......installed? One pass to get this thing back into some reasonable order. Or, leave as is.Your thoughts????? :( Kingfish

No! Fragmentation is only relevant when you have a mechanical head which needs to search for data all over a spinning disc platter.DO NOT DEFRAGMENT A SSD. Simple as that.

No! Fragmentation is only relevant when you have a mechanical head which needs to search for data all over a spinning disc platter.DO NOT DEFRAGMENT A SSD. Simple as that.

Konrad is correct.Fragmentation is not a problem on a random access device like an SSD, where access time for any block of data is essentially the same across the medium. Although it looks like a mess on the O&O display, functionally there's no problem.CheersBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

KingfishThis is from Intel: http://www.intel.com/support/ssdc/hpssd/sb/CS-029623.htm#5Do I need to defragment my Intel

Thanks all for your comments. Your suggestions follow what I have read, and I guess, what I was going to do. :( :( On the other hand, it sure does look terrible when you do an analysis and see all of those "ugly, red, fragmented" files. I'll just "TRIM away" and be a happy camper.. :( Kingfish

Yeah you just have to realize that it looks "ugly" because an SSD doesn't even work on remotely the same principles as a mechanical HD. The display O&O shows you isn't even accurate, the internal controller on the SSD is really the only thing that knows where the files really are in the physical matrix that makes up the SSD. "Defragging" has no meaning for devices like this, it doesn't matter in the slightest if a file is contiguous physically or if files are ordered sequentially etc.If you want to understand it at the core level, read these two articles Anand wrote on the technology:http://www.anandtech.com/storage/showdoc.aspx?i=3531&p=1http://anandtech.com/storage/showdoc.aspx?i=3631