How to implement RAID10?

RAID10 can be implemented by first implement RAID1(ie mirring) then implementing RAID0(stripeset on different disks) on it.

Configuring RAID10

Step1:Get the info who many devices are participating, for example here we taken 4 disks(/dev/sda1,/dev/sdb1,/dev/sdc1,/dev/sdd1).

Step2:Implement RAID1 on four drives(taking 2 each)

#mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sd[ab]1
#mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/sd[cd]1

Step3:Now implement RAID0 on two of RAID1 devices(/dev/md0,/dev/md1)

#mdadm --create /dev/md2 --chunk=64 --level=0 --raid-devices=2 /dev/md[01]

Step4:Format the RAID10 device with ext3 and mount the device

#mke2fs -j /dev/md2

#mkdir /store

#mount /dev/md2 /store

Unconfiguring RAID10

Step1:Unmount the RAID device /dev/md2

#umount /dev/md2 or #umount /store

Step2:Stop the RAID device

#mdadm --manage /dev/md2 --stop

#mdadm --manage /dev/md1 --stop

#mdadm --manage /dev/md0 --stop

Step3:Remove the Disks(/dev/sda1,/dev/sdb1,/dev/sdc1,/dev/sdd1) by using fdisk utility

Comments are entertained --- Surendra

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Firefox 3.5 Released

Fire fox 3.5 version is released with some good features such as private browsing(which is already implemented in IE and Chrome some long time back). Here are the features which is new to FF3.5

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I see most of the features are brought from Chrome.. What you say people?
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Get the basic Linux book

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