Hi,I ordered a HDD caddy for my ODD slot and a mSATA 512GB SSD (SanDisk) and installed them in my Clevo 170EM along my 1TB HDD. I added 2x500GB HDDs I have in my collection to set a RAID0. I want to share with you my experiments.I encountered difficulties migrating my existing 2.5" SSD system drive to the mSATA... system won't boot or boot but with the mouse/keyboard/usb ports not functionning at all :/ My last try was a success : low level disk copy using dd under linux, partition resizing using gparted, boot repair mode with a Win 7 iso and repair mode, command line and send those commands :bcdedit /export C:BCD_Backupc:cd bootattrib bcd -s -h -rren c:ootcd bcd.oldbootrec /RebuildBcdThe key to success was to remove the previous 2.5" SSD drive before trying to repair anything...After that I added the ODD HDD drive bay and added my two 500GB HDD to set a RAID 0.I set the RAID mod in the bios and access it during boot using Ctrl-I. Setting up a RAID 0 was really easy. Booting with windows without any additionnal modification was not :(Had to revert to AHCI, and change the "Start" value of the following keys to 0 :[FONT=monospace]HKEY_LOCAL_MACHINESystemCurrentControlSetServicesmsahciHKEY_LOCAL_MACHINESystemCurrentControlSetServicesiaStorVHKEY_LOCAL_MACHINESystemCurrentControlSetServicesiaStor[/FONT]After that I rebooted to bios, set to raid mode and booted to Windows successfully.The only remaining problem is that I can't access windows F8 repair mode anymore...Now my system is powered by a 512GB mSATA SSD (wired on a SATA2 port), a 1TB 2x500GB RAID 0 for my games (faster loading) and 1 TB for my data.Here are the CrystalDiskMark results :1. mSATA / 2. RAID 0 / 3. 1TB[ATTACH=CONFIG]14817[/ATTACH][ATTACH=CONFIG]14818[/ATTACH][ATTACH=CONFIG]14819[/ATTACH]I ordered 2x 2TB HDD to set a 4GB RAID... leading to a 5.5 TB laptop :) just enought to install all my 1100+ steam games ;)