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What happens if you try the following: mkdir /mnt/md1 mount /dev/md1 /mnt/md1 mkdir /mnt/md2 mount /dev/md2 /mnt/md2 ? This will create empty folders to use as mount points and try to mount the raid filesystems if it can cleanly mount them (if it has any issues trying to mount them, then it will report the error and leave the drives untouched). If ...


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Assuming I'm in a home environment and I want to keep my data secure, how would I build an expandable custom NAS? I can't afford a real SATA/SAS controller. I'm thinking of a scalable array of RAID 1 disks, with cloud backups for the most sensitive data. An external backup for the important data is a good start. (No matter how well the NAS ...


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If the disk is in your device manager all you need to do is go to Control Panel > Administrative Tools > Computer Management > Disk Management. check if it has a letter e.g (G:) etc.


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You need to provide the Marvell driver (the one that matches your Windows version and bit-level) to Windows Setup so that it can recognize the Marvell controller and, in turn, see the drives.


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Try the CentOS guide: http://wiki.centos.org/HowTos/SoftwareRAIDonCentOS5 # /sbin/grub grub> device (hd0) /dev/sda grub> device (hd1) /dev/sdb grub> root (hd0,0) grub> setup (hd0) grub> root (hd1,0) grub> setup (hd1) grub> quit You might also find find /grub/stage1 useful.


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What are you trying to do? Because I see two options: Option 1: You already have installed Fedora on the disk /dev/sda, on the first partition. You have some free space in /dev/sda2 You have some free space in /dev/sdb1 And you want to combine these two partitions in a mirror. Option 2: You have installed Fedora on the first disk (in the first partition) ...


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As stated on Wikipedia: RAID is a data storage virtualization technology that combines multiple disk drive components into a logical unit for the purposes of data redundancy or performance improvement. If you have multiple drives on a RAID controller, I would think that they are supposed to appear as one, so what is happening should be happening. ...


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After 4 full days I finally found a solution! Anyone who wants to change their RAID mode back to IDE mode in the BIOS, the standard procedure of changing it in the BIOS and a reboot won't work. You will have a Blue Screen of Death (BSOD) all the way. You HAVE TO EDIT THE REGISTRY. That is the solution! To get into the Registry on a working Windows system, ...


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RAID 2 A RAID 2 stripes data at the bit (rather than block) level, and uses a Hamming code for error correction. This code uses m parity bits out of 2m - 1 bits therefor the storage capacity for n disks would be 2m - m - 1 where m = log2(n+1). Here are some possible scenarios: +--------------+-------------+------------------+ | Parity disks | Total disks | ...


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This question asks how to recover a drive that a RAID has dropped, and asks how a drive can periodically drop out of a RAID when sector problems do not exist. To begin to understand what might be going on, it may be helpful to realize that it is completely plausible that the drives go into a long-term error recovery or calibration function and become ...


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From your own data it should already be rather obvious to chose the most used chunk size. From the data you presented I would go for 128K (assuming more reads than writes). This will reduce the wasted time on reads & writes significantly. How this turns out on your real world performance however is another story and depends heavily on the the type of ...


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Because there are no moving parts in the SSD drive, I would imagine that you should have no problem with long term storage. They should absolutely handle storage better than conventional hard drives. But I'd confirm with the manufacturer to see if there are any recommendations on their part.


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According to this admittedly rather old document on Intel's site (as well as this and this) you should be able to create a RAID 5 and a RAID 0 in those steps. Intel Matrix RAID used to be a separate technology featured in several southbridge chips, but from what I have researched, is now a part of Intel's Rapid Storage Technology. While the document ...


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A combined RAID-enclosure takes data with up to 6 Gb/s from your PC and the RAID controller has most probably direct channels to each drive so it can write the data simultaneously. If you have a RAID controller and an enclosure and have both connected by a single cable, the controller has to send the data to write for each drive separately. This generates ...


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I've been having a similar problem with my Gigabyte 890XA-UD3 using two Sandisk SSD's intermittently failing and breaking the RAID 1 logical drive. It was counter intuitive to "DELETE" the logical drive so you could recreate it (warning you data may be lost as well), but it does work. After years of dealing with HP/Compaq arrays and the things we've ...


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If this is a production system where safety and reliability is important I'd stick to ext4 type of partitions probably in association with LVM. I'm not as convinced that btrfs is at the same level of maturity as ext4.


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First a warning - a few bad blocks can be a sign of a failing drive. I wouldn't put the effort in to fixing it because the drive could well fail again on different blocks. Yes, if you do want to do it, it's possible, but I would approach it a different way. You don't need to use LVM to do this task; use raid linear mode (see ...


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In your setup it would not. What I would recommend is using ZFS built-in RAID-z2, which is then able to perform bit-rot recovery. Enabling lz4 compression will also provide better performance, as well as space savings.


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1: In your configuration, btrfs should detect data corruption but won't correct it as there is no data redundancy as far as btrfs is concerned. 2: RAID6 doesn't detect nor reliably protect against bit corruption. It only protects against disk failure and in some cases might detect unused still bad blocks. 3: If btrfs RAID6 is not ready, you might consider ...


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We should harp on about backup because if the data is worth keeping then it is worth backing up. RAID is not backup. What would you do if for example you had a fire? Or if you got a virus which deleted the data? It doesn't have to be cloud storage, make copies on bluray, tape or hard drives and store them offline at a different location Particularly if ...



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