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Yes in general you can do it, but it depends on the specific RAID controller's abilities. In the end you wouldn't make a RAID0 to add that as one side of a RAID1, instead you'd use a span to create a single volume by concatenating the two 500GB drives together. Exactly how you do this, again depends on the specific RAID controller being used.


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A better solution would be to set up a virtual machine and test in a VM, but this can be done without using a VM. What you need to do is create a loopback device. Create a 100MB file: dd if=/dev/zero of=loopback_file1 bs=1M count=100 Assign that file as a loopback device: losetup /dev/loop0 loopback_file1. From then on the block device /dev/loop0 will ...


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Stopping a simple single disk partition resize is definitely not safe, IMHO stopping a RAID expansion could only be worst. So, in my opinion: no, stopping a RAID expansion is not safe! (Unless someone at Synology say otherwise) I don't really know if there is a way to stop it. If you really need to stop the Raid expansion, try to make a full backup on ...


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I believe you are oversimplifying how a hard drive functions and trying to apply a higher level of logic to solve a theoretical dilemma. Hard drives are incredibly complex, and for decades the bits on a platter relationship to the bits you read and write was demolished. All modern drives do lots of work behind the scenes and deliver to you a virtual memory ...


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Apparently at the time the array got assembled the required RAID 6 personality was not yet available, due to the module raid456 not being loaded yet. Stopping the incorrectly assembled array, loading the module, and assembling it again should help: mdadm --stop md0 modprobe raid456 mdadm --assemble --uuid=05e69c50:388afb83:1418f18e:a393cb21 The UUID is ...


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It is possible to use RAM in something like RAID1 mode - with many server mainboards (at least IBM and HP), that provide this feature under different names, "Memory Mirroring" being the one I most often read. I do not think, that any of these will work with non-ECC RAM: If the two memory modules disagree about the value stored at an address, and no ECC ...


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I've done it with x8 physical/x8 electrical 3Ware cards which I have plugged into x16 physical/x4 electrical slots on motherboards. They work just fine. In my case, the 3Ware GUI also confirmed the card was only seeing 4 electrical lanes, as expected. In a SOHO environment I doubt you would ever notice the difference. In a server environment where you ...


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The Crucial MX550 / 512GB SSDs are incompatible with the AMD 990FX chipset / AMD SATA RAID controller. I returned them and will research what high performance SSDs will work with the controller. The rep at Crucial was honest and said they had no time frame on a firmware update.


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For this I am going to assume there are 12 disks in the array, and each are 1TB big. That means there is 10TB of storage. This is for example, provided you are not using more than 6 disks (6TB) worth of storage, then it doesn't matter what size they are. Oblig disclaimer: None of this may be supported by Synology, so I would check with them if this ...



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