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Partition a Centos 5.5 Storage Server

Posted on 2011-02-12
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Last Modified: 2012-05-11
Hi:
I have a Dell Poweredge 2850 server with 6 300GB hard disks. I want this server to be used as a Web server and as a Storage server.
What RAID should I use and how should I partition the drives during Centos installation? I want it to be in a way that if the O.S. gets corrupted I could just reinstall the O.S. without affecting the Data.
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Question by:pcelements
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RizyDeWino earned 125 total points
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>>6 300GB hard disks

if around 900Gb space is enough for your total usage then below configuration can be one option with high redundancy :


Raid 10 - 4 Drives
Raid 1 - 2 Drives

If storage requirement is not that high, you may go with single Raid10 with 4 drives keeping others in hotspare making it even more reliable , though in that case the total storage would be 600G ( i.e. with 4 300G drives in Raid 10 ).


For Partitions , I would suggest below :

/var - 20G  ( if you are expecting database size to grow larger over time, then you can increase var more, or if tat requirement is very low then can reduce it a bit too )
/usr - 25G
/ - 10G
/boot - 200Mb
/tmp - 100-200Mb

>>I want it to be in a way that if the O.S. gets corrupted I could just reinstall the O.S. without affecting the Data.

For this, one approach is to do OS installation on Raid1 array with 2 300Gb drives , and use the second Raid10 array with 4 300Gb drive for data i.e. for /home /var and /usr partitions.

How much disk space you are looking to have for storage other than the normal web server related data ? and what level of redundancy priority you have for web server VS the additional storage data in case its not equal ?



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