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===Hard Drives – Raid===
===Hard Drives – Raid===
SME Server 7 introduces a new feature - Automatic configuration of Software RAID 1, 5 or 6. RAID is a way of storing data on more than one hard drive at once, so that if one drive fails, the system will still function.
SME Server 7 introduces a new feature - Automatic configuration of Software RAID 1, 5 or 6. RAID is a way of storing data on more than one hard drive at once, so that if one drive fails, the system will still function.
# you don't need the pvresize or lvresize command
# you don't need the pvresize or lvresize command
# the final line becomes ext2online -C0 /dev/md2 (or whatever / is mounted to)
# the final line becomes ext2online -C0 /dev/md2 (or whatever / is mounted to)
====Raid Notes====
Many on board hardware raid cards are in fact software RAID. Turn it off as cheap "fakeraid" cards aren't good. You will get better performance and reliability with Linux Software RAID (http://linux-ata.org/faq-sata-raid.html). Linux software RAID is fast and robust. Good "hardware" RAID cards are fine, but avoid anything which requires a driver.
If your persisent on getting a hardware raid, buy a well supported raid card which has a proper RAID BIOS. This hides the disks and presents a single disk to Linux (http://linuxmafia.com/faq/Hardware/sata.html). Please check that it is supported by the kernel and has some form of management. Try googling for the exact model of RAID controller before buying it. Please note that you won't get a real hardware raid controller cheap.
<noinclude>[[Category:Howto]]</noinclude>
<noinclude>[[Category:Howto]]</noinclude>
