Author: Robert Hyatt
Date: 20:48:52 05/26/04
Go up one level in this thread
On May 26, 2004 at 18:44:33, K. Burcham wrote: >On May 26, 2004 at 16:32:16, Dan Andersson wrote: > >> I prefer to use RAIDed drives for increased speed and reliability. >> My question is based on the following: >> The KT8 Neo has a Promise RAID controller. It makes RAIDed HDs slow as a single >>drive in many situations. >> So I'm basically hoping that there isn't a Promise chip on The K8T Master2-FAR >>motherboard. >> There seems a pretty good chance there isn't since they had the good sense to >>go from a Realtek LAN on the K8T Neo to a Broadcom on the K8T Master2. >> >>MvH Dan Andersson > >I assume you refer to "Raid O Striping". >This in theory splits data and writes to both drives at same time. I tested this >raid o with two 20 gig Barracudas, did not see a performance increase with chess >programs. maybe 4 with raid setup will be measurable, not sure. >I know many sites have tested with hard drive benchtest software and gotten >better numbers with raid---but actual noticeable differences with chess program >is different. example--kns or total knodes in a given time for a test position, >or maybe time to solve. >I think the people that transfer a large amount of data at one time will see a >difference in load or download time---example load moves onto hard drive all at >once. this type of huge data transfer we will not see with chess programs. > >I do not believe MSI would use a controller to slow the hard drive. >http://www.msicomputer.com/support/formviewer.asp?esoformid=94 > >Looks like the Via VT8237 Chipset manages the Raid setup. >http://www.msicomputer.com/product/p_spec.asp?model=K8T_Master2_FAR&class=mb > > >Here are some benchtest numbers, but remember these are with large data >transfers. I do not think our chess programs will utilize this capacity. > >http://www.viaarena.com/?PageID=311 >http://www.viaarena.com/?PageID=312 > >kburcham Is this SCSI raid or EIDE raid? SCSI raid works. I run it everywhere. EIDE raid is another matter when talking about performace. My dual is running software raid0 and it is faster than non-raid, and as good performance-wise as hardware raid excepting it increases interrupt traffic since hardware raid generates one interrupt per transfer while software raid generates N. Software also uses CPU cycles to compute the raid parity data. Hardware does it outside the CPU.
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