11 Replies Latest reply: Feb 27, 2012 9:38 PM by parsec RSS

    Intel 520 Problems


      Hello, just purchased a new 520 240gb ssd.  Loaded windows fresh on it.  Loaded newest RST( and intel toolbox(3.0.2).  Under SMART details it shows C0 and AE values at 26.  Every time I shut down my computer the count goes up by one.  This is not supposed to happen because I am shutting down windows correctly.  How can I correct this issue? All of my drivers are the newest version and I have flashed my motherboard bios to the newest version.

      Intel 980x
      Gigabyte x58a-ud7 bios f8
      intel 520 240gb connected to the ich10r controller, not the marvell.  AHCI enabled in the bios.
      Nvidia GTX 480

        • 1. Re: Intel 520 Problems

          New irst for download on Intel site, not sure if that will update the smart data or not. Both of mine do this as well, but I don't really see it s much of a problem. If all the drives are doing it and it seems that may be the case for the 520 then I would think an update along the way will address this.

          • 2. Re: Intel 520 Problems

            I can confirm mine does the same ( SMART codes :unexpected power loss AE & Unsafe shutdown count CO), although wouldnt have noticed this unless I saw your post. 520, 120GB, SATA 2.


            Everything seems to working fine, in fact exceeded expectations, from an HDD to an Intel SSD


            Be nice to know why this is occuring though.

            • 3. Re: Intel 520 Problems

              Yes, my 520 does this too. The only concern I would have is if this field was used as a warranty voiding criteria, but I highly doubt that would happen, and is not mentioned in the warranty information. It is a rather silly bug, but as a programmer, I can tell you that many times the "little stuff" gets ignored.


              We should file support tickets or however Intel does that, just to make them aware that we are aware of this.


              Do you have a concern about this that I am missing?

              • 4. Re: Intel 520 Problems

                I can confirm this (bug?) too. , but it happens only in Windows (in GNU/Linux it works correctly).


                I'm almost sure that it happens also after booting/turning off GNU/Linux.


                Message was edited by: wsirko

                • 5. Re: Intel 520 Problems

                  Very interesting, thank for the info. What are you using to check SMART values in GNU/Linux?

                  • 6. Re: Intel 520 Problems

                    I'm using smartmontools: smartctl -A /dev/sdb, but there's also an app with gui called gsmartcontrol.

                    • 7. Re: Intel 520 Problems

                      wsirko, Great, thanks. I also used smartmontools (on Windows 7),  specifically smartctl, and the values it returned matched those shown in  the Toolbox. This indicates (well, only two examples) that the Toolbox and smartctl, on the two different OSs, are reading (interpreting ?) the SMART data in the same way, so hopefully we can trust those results in trying to determine (in general) why these seemingly odd shutdown counts are happening.


                      All this info is important IMO, since it seems to show that it occurs with Windows 7, but not on Linux.


                      wsirko, just to review and be clear, you're saying that the Unsafe Shutdown and Unexpected Power Loss attributes on your 520's SMART data, are NOT incremented after a normal OS shutdown and reboot on Linux, correct?

                      • 8. Re: Intel 520 Problems

                        Heh, this is strange. When I initially tested this I was sure that those counters where incremented only after booting/turning off Windows, but not GNU/Linux (did a couple of reboots). But I noticed today that the counters increased by 1 since yesterday and the only OS I booted/turned off was a GNU/Linux distribution.


                        So the answer is: No, I can't confirm - I think it happens also in GNU/Linux...

                        • 9. Re: Intel 520 Problems

                          That's Ok, much better for us to know what's actually happening than not. Thanks for posting that. Feel free to update that info if something changes, or you discover what happened, etc.


                          I've got one more interesting bit to add to this. When I first installed my new 520, I let it run for a few days, and just fooled around with it to check if it was fine. Before installing Win 7 on it, I deleted it's volume and Secure Erased it in the Toolbox. During the SE, a message appeared that the 520 was Security Locked, and needed to be power cycled before the SE could be done. That is normal and happened when I SE my 510 SSD, so I was prepared by having the side of the PC case off. I removed the SATA power plug from the 520, and put it back and clicked to continue. The SE completed fine, no need to reboot, etc. I then shutdown the PC and set up the PC and the 520 to install Win 7. The installation went fine, not a single glitch, and the 520 became an OS drive.


                          Later, I checked the 520's SMART data in the Toolbox. I noticed that the Power Cycle Count was now one greater than the Unexpected Power Loss and Unsafe Shutdown counts! You might think that power cycling the 520 like that would count as an Unexpected Power Loss or Unsafe Shutdown, but who knows what actually happens.


                          I read in the 520 spec document that Unexpected Power Loss and Unsafe   Shutdown counts are incremented whenever the 520 loses power without  the  last command it receives being the SATA Standby Immediate command.   So does that imply that the Toolbox sends the SI command to the 520   during the SE process, but when the PC is shutdown, Windows, IRST (the driver I use), or whatever is not sending the SI command to the 520?


                          Speculation is worthless since I really have no idea what is happening during any of these processes, but I think it's interesting.

                          • 10. Re: Intel 520 Problems

                            Parsec, I did much the same when I got my two 520's. Played with them before installing OS. I did one secure erase on both to setup install.


                            My counts are off by 1 also, like it did not count the SE. Werid.

                            • 11. Re: Intel 520 Problems

                              Thanks DRules, nice to confirm what I saw with my 520. I'm not worried about it


                              IMO, the question remains, do we really understand what this data means and how it is created? Does the SF2281 controller's base firmware create this data (most likely) and do the users of the controllers (SSD manufactures) have control of that data?


                              I find myself once again at what I call the knowledge climb. I've reached the limit of my knowledge and before me is a mountain of learning that I need to conquer before I can get the answers. Most of the time, the answers are not as important as what I learn finding the answers.