I have benchmarked various Linux filesystems using different blocksizes and workloads on an mdadm RAID 1 setup using two Western Digital 500 GB SATA 3.0 drives and a 3ware 9550XS 4-port hardware RAID card (which I had trouble getting to work initially). It's not as extensive as I would have liked, but I came across some interesting results.
Read more »Benchmarking Linux filesystems on software RAID 1
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Build Your Own RAID Storage Server with Linux
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If you've been thinking of building yourself a dedicated storage server, this is a good time to do it...The ultimate in flexibility and reliability combines Linux software RAID (Redundant Array of Inexpensive Disks) and LVM (Linux Volume Manager).
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How To Set Up Software RAID1 On A Running System (Incl. GRUB Configuration) (Debian Etch)
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This guide explains how to set up software RAID1 on an already running Debian Etch system. The GRUB bootloader will be configured in such a way that the system will still be able to boot if one of the hard drives fails (no matter which one).
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