Differences between current version and predecessor to the previous major change of RaidOnLinux.
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| Newer page: | version 9 | Last edited on Friday, May 15, 2009 8:10:38 am | by AlPyat | |
| Older page: | version 7 | Last edited on Sunday, September 4, 2005 6:23:59 pm | by ScottWalsh | Revert |
@@ -11,9 +11,9 @@
It is a good idea to ensure the Hardware RAID is a SupportedRaidController (unless planning on hacking it into going).
! Software RAID
-Software RAID is performed in the kernel. Linux 2.6.11 has support for RAID levels , 1, 1+, 4, 5 and 6. You can probably do RAID +1 and RAID 1+0 using the individual RAID 0 and RAID 1 modules, but there is specific support for 1+. See SoftwareRaid for some more infomation about this under linux
+Software RAID is performed in the kernel. Linux 2.6.11 has support for RAID levels , 1, 1+, 4, 5 and 6. You can probably do RAID +1 and RAID 1+0 using the individual RAID 0 and RAID 1 modules, but there is specific support for 1+. See SoftwareRaid and RaidNotes
for some more infomation about this under linux
There is some debate over software RAID's performance and reliability, but I've not seen anything other than anecdotal evidence to confirm this. SoftwareRaidVsHardwareRaid has some more notes on the relative benefits of the two.
You can apply Software RAID to any block devices, regardless of their physical nature, so you only need to get simple controllers for whichever sort of devices you want. I've heard people joking about building a RAID5 volume of usb memory sticks or floppy disks, and I know of at least one turnkey NAS system that offers RAID-1 across external USB disks - this will almost certainly be running linux and doing software RAID across the volumes.
@@ -31,11 +31,12 @@
One cavaet for large RAID volumes is that the traditional DOS FAT doesn't handle partitions greater than 2 TB. AddToMe link to notes on this
! Resources
+* [RAID Calculator @ RAID Center - RAID Tools and Comparison Charts|http://www.icc-usa.com/store/pc/viewContent.asp?idpage=7]
* SoftwareRaidVsHardwareRaid
* http://linuxmafia.com/faq/Hardware/sata.html
* http://www.tweakers.net/reviews/557/
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