please explain me step by step.
2006-12-18 15:54:43 · 7 answers · asked by raghu n 1 in Computers & Internet ➔ Computer Networking
That depends upon the RAID controller. Best bet is to read the docs for it. There are far too many to tell you without knowing exactly what hardware you're working with.
2006-12-18 16:00:13 · answer #1 · answered by Bostonian In MO 7 · 1⤊ 0⤋
You don't say what level RAID you want.
RAID levels range from 0 to 5 and this page should answer most of your questions.
http://www.prepressure.com/techno/raid.htm
I would recommend RAID1 (which is disk mirroring) and if a hard disk or the RAID controller dies, than all you have to do is copy the dats on the good disk to the replacement disk.
Most of the other levels write data across all disks in the array (and looks like one big hard disk to the server). However for example with RAID5 if a disk fails you can keep working, replace the bad disk with a new one and the data will write itself from the other disks back to the new disk. Sounds great, however if the RAID controller dies (and it happens more often then you'd think) then you lose all the data on the disk set. It is possible to get a setup with a redundant controller as well - so if the controller dies you are still functioning.
Since nowadays you can get very large and fast disks (unlike when RAID was first developed years ago) you are as mentioned better off with RAID 1 beacause if you lose a disk or even the RAID controller you haven't lost your data.
The only small downside is that you are only using half the total disk space as you are mirroring them. Small price to pay for peace of mind.
Note that RAID is NOT a replacement for full backups. You should always backup to either media or another machine in a seperate building so that if there's a fire or theft where the server is, you don't lose your data.
2006-12-19 21:43:00 · answer #2 · answered by Fitzy 2 · 0⤊ 0⤋
There is no single answer. You can have a hardware raid or a software raid.
If it is a hardware raid, then you will need to interrupt the machine before it boots using a function key (you should see a prompt on the consul). You will then be able to interact with the raid bios to configure it.
If it is a software raid, there should be a a tool on the machine to configure the raid.
Consult the manufacturer to find out what you have got and how to use it.
2006-12-19 00:05:30 · answer #3 · answered by Stewart H 4 · 0⤊ 0⤋
There are two types of RAID. 1st is Hardware RAID and other is Software ( OS Base ) RAID. Which is do you wants to configure.
1. In hardware raid u got RAID controllar Cd to boot. Just boot your server that CD and follow the instructions.
If u don't get it press Ctrl+S at time of booting and configure as instructed.
2. In software raid you configure it with disk management system.
2006-12-19 07:00:33 · answer #4 · answered by sunil p 3 · 0⤊ 0⤋
The raid may be handled by the controller card. Reboot the computer and see if there are any notices about raid setup (usually it is something similar to ctrl+M, but it varies by manufacturer).
Once you are in the raid setup you can make changes, add/remove disks from the config, etc. It is different for every manufacturer, so probably no one is going to be able to give you exact step by step instructions.
2006-12-19 00:03:49 · answer #5 · answered by Bryan A 5 · 0⤊ 0⤋
What operating system are you planning on using RAID with?
2006-12-19 00:02:11 · answer #6 · answered by Ben B 3 · 0⤊ 0⤋
There are lots of options. So specify in which way you want. I suggest you read online documents first then tell us more specifically.
2006-12-19 00:21:40 · answer #7 · answered by tasdiqahmed 2 · 0⤊ 0⤋