SCSI vs. RAID

[morningtrader]

I'm building out a low-middle end video editing setup to create multimedia CDs to sell at my website. The video software/hardware solution I'm looking at (Pinnacle) only recommends SCSI input of DV. BUT the solutions I've seen with RAID setups (EPoX's DDR motherboard with RAID, for example), sounds to me like it will produce comparible throughput of video source material.

Does SCSI have any advantages over RAID in terms of pure power for video input? Since SCSI operates outside the CPU's realm, maybe I need to consider that.

Alan

 

[zzzz]

you are confusing scsi vs ide.
scsi raid is better than ide raid but more expensive as well.

 

[BrotherRaven]

You can't simply compare Raid and SCSI.

RAID is a scheme in which drives are put together in groups to help speed the access times, transfer rates, and provide data security. (Redundant Array of Independent Devices)

SCSI is a type of interface (as is IDE/ATA).

Thus you can have a ATA system, an ATA Raid system, a SCSI system, or a SCSI Raid system.

Raid 0 is stripping where the data is split amongst the drives in the raid
Raid 1 is mirroring where the data is copied twice to both devices
Raid 5 combines both mirroring and stripping but comes at the price of having only 80% total space (essentially 1 out of every 5 drives is needed to backup the drives).

SCSI is generally faster than ATA.
1) SCSI drives usually have higher RPM speeds and better performance than ATA drives
2) SCSI requires less CPU cycles of the Processor as it has hardware (on the scsi card) to control and communicate w/ the harddrives

There you have it.

BrotherRaven

 

[morningtrader]

From the end users POV (mine)...

If I'm drawing in DV to a IDE RAID array, vs. a SCSI drive...which will be faster and less likely to have hang ups?

------------------->

 

[yazz]

depends on what OS you running...

 

[dowxp]

i used to dv record on my promise raid [which is now gone.] it was sufficent. but i had to be careful. dont open programs or it will drop frames. since i got scsi,i havent tried it out due to the fact i sold my dv camera.