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This is done all day long by many people in the world, but sometimes cards are bad or going bad, or you lose power, etc. *** Disclaimer – You are doing this at your own risk by performing a flash on a controller ***.This will avoid making any drive bootable in the system BIOS, so the system will post much quicker, and it lets unRAID have sole control over the drives, which is what we want. Once you have flashed your controller card to IT mode, it is recommended that you change the " Boot Support" to " Disabled" via the controllers BIOS settings (CTRL-C).DOS does not, but almost everything else does. If the OS of a tool has an admin mode, make sure you have admin privileges.Sometimes there will be 2 ways to do it, and both may be described, use what works best for you. Search for your controller below and carefully follow the instructions.Given, you have it already in your hands and found out you need to flash it, then you have to identify your controller. The hardware compatibility section in the wiki can help you find the right piece of hardware.
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Ideally you want to check what kind of controller fits your needs before you think of flashing it.In turn, this allows operating systems that handle parity calculations to directly access the drives, thereby reducing the rate of TLER dropouts from RAID arrays among other things." Oftentimes, re-branded cards are less expensive to acquire than their LSI counterparts making re-brands highly desirable." " It is also well known that using the initiator-target (IT) firmware mode is a great way to give up the RAID features of the cards, treating the cards instead as simple HBAs in IT mode.
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" It is a well known practice that many vendors re-brand LSI RAID cards and host bus adapters (HBAs) using different firmware and re-sell them as their own. Why should we care about firmware flashing? Usually you will find a link leading you to users experience. If you are looking for specific information not available here, please have a look at the hardware compatibility section in the wiki. Nevertheless, this is an ongoing effort and the result will not cover all available controllers but the most popular ones. The intention is to channel all available information on the following pages. Since madburgs initial post there have been following over 1k posts and finding the right information has become hard to find in his thread. Later, fireball3 took on much of the labor of keeping the forum thread updated, and going forward will be working hard to maintain this wiki page now. Some of the text on this page is a direct quote of his work. Considerable credit goes to madburg for his many contributions to this effort. This page is derived from the excellent work spread throughout the forum thread entitled LSI Controller FW updates IR/IT modes, first started by madburg. The information is dynamic, will be updated as needed. FreeNAS It describes both firmware and tools, and the appropriate versions. In fact, it is nothing unRAID specific, it can be also used for other systems that need to have the disk drives accessible without any intermediate layer, e.g. This page is designed to collect and present all known info for crossflashing drive controllers for unRAID systems. Sometimes they need a firmware upgrade, sometimes they need to be flashed to look like a different controller, and sometimes they need to be put into a different mode. If that were true of all controllers, then you wouldn't need this page! But unfortunately there are a number of very good controllers that do need to be reflashed, in order to work correctly with unRAID.
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