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| Newer page: | version 4 | Last edited on Wednesday, July 13, 2005 1:37:51 pm | by DanielLawson | Revert |
| Older page: | version 3 | Last edited on Wednesday, July 13, 2005 1:37:31 pm | by DanielLawson | Revert |
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Linux has support for three different kinds of [RAID]: true hardware RAID, software RAID, and fakeraid. It also supports RAID across IDE / PATA, SATA, SCSI and probably any other sort of block device you can present as a SCSI device (such as USB memory sticks)
! Hardware RAID
-This is true RAID, performed in a dedicated chip on the RAID controller. I believe any SCSI RAID controller you come across will be true hardware RAID. The only true hardware IDE / PATA raid controllers available are made by [3ware|http://www.3ware.com], who also make SATA RAID controllers. [Adaptec|http://www.adaptec.com], [Areca|http://www.areca.com.hw], LSI and Intel also produce true hardware RAID controllers, although Adaptec also has
a range of FakeRAID controllers, so be careful
+This is true RAID, performed in a dedicated chip on the RAID controller. I believe any SCSI RAID controller you come across will be true hardware RAID. The only true hardware IDE / PATA raid controllers available are made by [3ware|http://www.3ware.com], who also make SATA RAID controllers. [Adaptec|http://www.adaptec.com], [Areca|http://www.areca.com.hw], LSI and Intel also produce true hardware RAID controllers, although LSI and
Adaptec also have
a range of FakeRAID controllers, so be careful
This normally performs the best out of all the options, however this depends entirely upon the controller and disks. The Adaptec SATA controllers, for example, perform worse than the 3ware controllers, which in turn perform worse than the Areca controllers. They are priced in the same order as well. You get what you pay for.
Generally if the controller has more than 4 ports and supports RAID5, it's going to be a hardware controller.
