scuzzy vs ide

[Barry Schadt]

I always wondered, but never looked into it. What makes a scuzzy faster then a ide. Barry

[Un4given]

Primarily it comes down to the fact that SCSI (not scuzzy) has its own controller. Also, SCSI drives have much faster rotational speeds. Most SCSI hard drives are now running between 10-15K RPM, where the fastest IDE drives are 7200 RPM.

Oh and just an FYI, SCSI= Small Computer Systems Interface

[Tekime]

It's SCSI actually (Small Computer System Interface), but you've got the pronunciation correct

It is faster because the interface is made to be faster, as well as the devices. It is, however, more expensive and more difficult to use. It was based on aproprietary technology, and all of these things combined made IDE the obvious choice for mainstream consumers. For a good description, check this out.

[Barry Schadt]

Do you think they'll get higher then 7200rpm's Barry

[raider1v1]

also something that makes scsi a lot better is they can handle 256 simo in and out requests, while ide is 1 at at time. (i think that its something like that)

but they are hot and expensive and sometimes a pain in the but

[Tekime]

Originally posted by Barry Schadt
Do you think they'll get higher then 7200rpm's Barry

Eventually; 10000 RPM is on the horizon for us IDE users.

[ewitte]

Originally posted by Tekime


Eventually; 10000 RPM is on the horizon for us IDE users.

Think so? I would think they would wait until serial ata.

[fbs1992]

also another advantage is that you can hook a whole bunch of them together on a single channel. i forgot exactly how many but its alot more than just the two for ide

[Blue_MiSfit]

The difference between SCSI and IDE these days is very marginal, especially when we are talking about RAID. For those who dont know RAID is a way of linking hard drives in various ways via a special controller chip to increase performance, security, or both. A simple RAID 0 array consists of 2 hard drives where data is "striped" into 2 pieces and stuck on both drives so that they can read the data simultaneously - therefore overcoming the rotational speed limitation. In theory RAID should then provide 2x the speed right? wrong. RAID offers about a 30-40% increase in most cases when set up correctly. SCSI and IDE both have RAID capabilities, but SCSI is faster at writing than IDE, and IDE is faster at reading than SCSI (could be other way around - i may get flamed to hell for this) so the chocice of SCSI or IDE depends on the application. Heavy Duty servers and such use very very expensive RAID arrays of many many SCSI drives which mirror and stripe each other to the point of ridicule but this is the only situation where SCSI is really much faster. In real life applications, the difference between SCSI and IDE is quite negligable. SCSI is really not worth the much higher cost for 99% of people. Personally I would love to have an ULTRA320 SCSI RAID array - but it really wouldnt be faster than my current setup of just a single 40GB IBM 75GXP(doomed). Hope I havent rambled too hard - I get very long winded when discussing things of this matter.

[dip027]

Originally posted by Blue_MiSfit
The difference between SCSI and IDE these days is very marginal, especially when we are talking about RAID. For those who dont know RAID is a way of linking hard drives in various ways via a special controller chip to increase performance, security, or both. A simple RAID 0 array consists of 2 hard drives where data is "striped" into 2 pieces and stuck on both drives so that they can read the data simultaneously - therefore overcoming the rotational speed limitation. In theory RAID should then provide 2x the speed right? wrong. RAID offers about a 30-40% increase in most cases when set up correctly. SCSI and IDE both have RAID capabilities, but SCSI is faster at writing than IDE, and IDE is faster at reading than SCSI (could be other way around - i may get flamed to hell for this) so the chocice of SCSI or IDE depends on the application. Heavy Duty servers and such use very very expensive RAID arrays of many many SCSI drives which mirror and stripe each other to the point of ridicule but this is the only situation where SCSI is really much faster. In real life applications, the difference between SCSI and IDE is quite negligable. SCSI is really not worth the much higher cost for 99% of people. Personally I would love to have an ULTRA320 SCSI RAID array - but it really wouldnt be faster than my current setup of just a single 40GB IBM 75GXP(doomed). Hope I havent rambled too hard - I get very long winded when discussing things of this matter.

i don't know for sure, and i'm not flaming you, but i thought fast scsi drives were faster than the fastest ide drives...for everything...??

[thebove]

Originally posted by dip027


i don't know for sure, and i'm not flaming you, but i thought fast scsi drives were faster than the fastest ide drives...for everything...??

they are. what he's saying though, is that for the average joe schmoe, the actual real world performance (what you can notice as a difference from standard ide), is rather minimal. as far as benchmarking transfer rates and throughput are concerned, scsi will beat ide in any circumstance however

[Bootleg]

scsi hdd have like a 4.9ms seek time...bout 8.9 for IDE hdd

and the transfer for scsi is 160mg while its 133mb max for ide...

[Thermo]

SCSI is faster than EIDE, but the margin is not what it once was. SCSI raid five and hot swapping are two benefits that SCSI still has over EIDE.

[Tekime]

Originally posted by ewitte


Think so? I would think they would wait until serial ata.

AFAIK, current IDE drives barely utilize ATA133, I mean for most drives the difference between using ATA100 & ATA133 is negligable. Truth be told, they could very well hold off until Serial ATA but I wouldn't be surprised to see 10,000 RPM IDEs around. If it's worth it to manufacture, there will be plenty of customers who don't grab SATA the second it hits the streets.

[CoOliOgUy]

hmm i've read about that 8 meg WD thats supposed to be upto par with SCSI performance, problem with SCSI is its so expensive..