i have a problem which i cannot identify correctly. I have a process (on WinSrv 2008 R2) which imports data into Mongo DB and periodically whole system freezes - once per 5-10-15 minutes for about 20-30 seconds. During freezes HDD led on the computer box is constantly 'on' and all processes that somehow access SSD are not responsive. After some time (15-30 seconds) system unfreezes and perfmon shows disk queue length of 800+ (whereas normally it is not more than 5-10).
Screnshot from perfmon is here http://clip2net.com/s/5wVBPP
I suspect there is some hardware problem with SSD, which is Intel 520 120GB (was tried with similar or worse result /system hangs completely/ - in different boxes with latest SSD/BIOS firmwares and drivers). The question is - are there are some other reasons possible?. Is it normal for Intel 520 /my company installs only Intel hardware, so there seems to be no other hardware choice/?