View Single Post

**Praetor** · 03-30-2005, 05:22 PM

RAID4 - Block-level Striping + Parity

Very similar to RAID3, RAID4 differs by striping at a block-level (whereas RAID3 works on a bit-level, RAID4 operates on the kilobyte scale). The block size can be adjusted.
Due to the striping, read performance is exceptional however again, write performance, while good, is limited slightly by the parity generation
Three drives are required as a minimum for implementation (two for the stripe, one for the parity)
Has a single-drive fault tolerance

03-30-2005, 05:22 PM	#7 (permalink)
Praetor Administrator Join Date: Jul 2004 Location: Canada Age: 26 Posts: 19,953	*RAID4 - Block-level Striping + Parity* Very similar to RAID3, RAID4 differs by striping at a block-level (whereas RAID3 works on a bit-level, RAID4 operates on the kilobyte scale). The block size can be adjusted. Due to the striping, read performance is exceptional however again, write performance, while good, is limited slightly by the parity generation Three drives are required as a minimum for implementation (two for the stripe, one for the parity) Has a single-drive fault tolerance __________________ ASUS P5K Premium WiFi-AP, Q6600@3.7 / ASUS P5ND, E6400@3.8 4GB OCz Platinum XTC 8500 / 4GB CorsairXMS2 6400 5x500GB Seagate 7200.10 / 2x500 Seagate 7200.10 OCz 8800GTX 768MB @ 630/800 / 2x Galaxy 8800GT SLI