![]() How to set up s oftware RAID 1 step by step? It is a trend, and you can flexibly set up software RAID via Windows Disk Manager. Usually, Windows Professional Edition and Windows Server Edition systems can support it. It is the best choice for common personal users and server users. Software RAID is well supported by the operating system, which is implemented by OS kernel module, and no required extraordinary hardware. This means it takes a high cost to set up hardware RAID. Hardware RAID can be implemented by requiring high hardware requirements, in the form of special disk controllers, but also needs computer motherboard support. Usually, RAID 1 and RAID 5 are widely used to solve the risk problem of server data storage. How to protect server data? Many users choose to use RAID to deal with the risk of hardware failures. In the IT world, hardware failure does not occur often, but in the event, the running server may lose large amounts of important data. There are a variety of different types and implementations of RAID, each with its own advantages and disadvantages. HDD boot order will have to be probably modified also in BIOS.RAID is a technology that allows a volume (partition) uses together with the space on the multiple disks, in this way, disk's utilization and system performance can be improved. What changes should I make to grub to be able to boot after I swap /dev/sda. [ Minimal BASH-like line editing is supported. GNU GRUB version 0.97 (640K lower / 3072K upper memory) dev/sda1 does not have any corresponding BIOS ~]# grub I tried these commands: ~]# grub-install /dev/sdb I am trying to switch boot drive to some other drive, I have done a lot of searching online, but I am unable to figure it out. ![]() So if I turned now the server off to change the drive, it would not boot again. I think this is dev/sda drive, which is faulty. ![]() # kernel /boot/vmlinuz-version ro root=/dev/md0 # all kernel and initrd paths are relative to /, eg. # NOTICE: You do not have a /boot partition. # Note that you do not have to rerun grub after making changes to this file Here is /boot/grub/nf: # nf generated by anaconda dev/sda is not listed there for some reason and it lists /dev/sdg, which according to fdisk does not exist. Here is my boot grub device map: # this device map was generated by anaconda I have exchanged many faulty drives before in other servers, but here /dev/sda is also boot drive (probably). Md1 : active raid5 sda2(F) sdd2 sdc2 sdb2 sde2 sdf2ĩ740695040 blocks super 1.1 level 5, 512k chunk, algorithm 2 īitmap: 15/15 pages, 65536KB chunkĪs you can see, the array md1 is in degraded state, /dev/sda drive is faulty. Md0 : active raid1 sdc1 sda1 sdd1 sdb1 sde1 sdf1 Units = cylinders of 8 * 512 = 4096 bytes Partition 1 does not end on cylinder boundary. I/O size (minimum/optimal): 4096 bytes / 4096 bytes Sector size (logical/physical): 512 bytes / 4096 bytes Server has 6 2TB drives with 2 software raids on them - md0 raid 1 for system and swap and md1 raid 5 for data. I have my hardware-owned dedicated server hosted in remote datacenter, running CentOS release 6.4 (Final) with grub (GNU GRUB 0.97).
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