I have two servers Dell CS23-SH which have 3 x 2TB HDD installed.  

How I can configure the RAID for this server model?
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Patrick BogersDatacenter platform engineer LindowsCommented:

Since the CS23-SH is a tailored made server it depends what raid conttroller is in. What type is it?
besgojaniAuthor Commented:
How can i check that?
Patrick BogersDatacenter platform engineer LindowsCommented:
Open up the server and have a look. Or run Belarc Advisor if the system could not be shut down quickly.
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Normally when the server boots,it should give you a screen as it POSTS giving you a model number of controller (PERC or LSI).

You can also get into the system BIOS (f2 key) and it should tell you what controllers are available.
besgojaniAuthor Commented:
On BIOS it doesn't give any information about raid.

The Belarc Advisor shows the following results:

ATA Channel 0 (2x)
ATA Channel 1 (2x)
Standard Dual Channel PCI IDE Controller (2x)
Patrick BogersDatacenter platform engineer LindowsCommented:

After BIOS there is no mentioning about e.g. hit f4 to configure raid controller?
If no, i am afraid you dont have a raid controller but again you can check this by opening the server. If the hdd cables lead to an internal card you probably have raid controller what brand/type is it?
If the cables lead directly to motherboard sata/sas connectors it seems you dont have raid controllers available so if you need/want raid you need to purchase one.
The controller on board may support RAID,but it would probably be some fake Intel Matrix  garbage.

If you're running server 2012,you can use M$ resilient file system for RAID support.
Gerald ConnollyCommented:
Just configure software RAID-1 in your OS, either Windows or Linux will do this

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