I have a question about IDE and SATA interfaces

[milindasenarath]

you have to use a qualified mother board also for get the max

 

[Anusha]

normaly the transfer rate is 10times slower than the given speed if they say 3gb per second its 300mbps...

You are crazy! Why can't you people not confuse the "B" and "b"???
3Gbps = 375MBps (actually 300MBps because of encoding overheads)

 

[Anusha]

you have to use a qualified mother board also for get the max

Rather, a chipset.

 

[hul2000]

Interface speed and the speed reading off the platters are two different things.

Here, 100MBps, 133MBps, 1.5Gbps (= 150MBps), 3Gbps (= 300MBps) are interface speeds.

There are few drives that can touch 100MBps platter speed, and one drive that can reach up to 120MBps (The Samsung Spinpoint F1 series).

PATA or SATA, the hard drive is still the same.

No point having a 4 lane road or 10 lane road if the traffic is so low. Like that, it doesn't make much difference with a faster interface, if data can't be pulled or pushed at that rate.

P.S.
Those Gbps to MBps conversions do not follow the rule of 8bits = 1 byte as there is a 8b/10b encoding process. (in 10bits, there is actually 8 data bits, others are encoding overheads)

So, even if we connect a SATA hard disk to a PATA interface (theoretically) it wouldn't make any difference, right?

 

[randiljosh]

i still don't think there is anything 2 beat sccsi hards it's 14000rpm

 

[hul2000]

i still don't think there is anything 2 beat sccsi hards it's 14000rpm

I don't think even SCSI Hard Disks would go above 150MBps (platter speed)

 

[randiljosh]

I don't think even SCSI Hard Disks would go above 150MBps (platter speed)

yeah may be but i got 60mb/s in ma sata hard it was fast enough.150mb/s would be more than enough i think

 

[isurunadu]

thankz 4 da info

 

[Anusha]

So, even if we connect a SATA hard disk to a PATA interface (theoretically) it wouldn't make any difference, right?

Interface speed is not the only thing offered by SATA.

1. SATA bandwidth is independently assigned for drives (unlike in IDE, 2 drives share one channel)
2. SATA supports Hot Plug
3. SATA supports Native Command Queuing, which will show tangible throughput improvements in a server environment...Not so in desktop.

 

[Anusha]

i still don't think there is anything 2 beat sccsi hards it's 14000rpm

Correction: 15000RPM

 

[randiljosh]

Correction: 15000RPM

oh yeah thanx

hey i'm gonna buy a sata dvd rw it's more expensive than ide one but does it worth it to pay extra for a sata dvd rw

 

[Anusha]

I don't think even SCSI Hard Disks would go above 150MBps (platter speed)

Well, those SCSI drives are enterprise level drives with very high reliability.
The most important thing that they offer is the very low access times because of the rotation speed.

 

[hul2000]

Correction: 15000RPM

But, what's the actual data transfer speed of a SCSI Hard Disk (not the Interface speed)?

 

[randiljosh]

Well, those SCSI drives are enterprise level drives with very high reliability.
The most important thing that they offer is the very low access times because of the rotation speed.

have you ever use one???????coz they are jolly expensive

 

[hul2000]

Well, those SCSI drives are enterprise level drives with very high reliability.
The most important thing that they offer is the very low access times because of the rotation speed.

Yes, I agree. SCSI are very reliable than most of IDE or SATA.
Just want to know the actual transfer speed.

 

[hul2000]

oh yeah thanx

hey i'm gonna buy a sata dvd rw it's more expensive than ide one but does it worth it to pay extra for a sata dvd rw

Well, some DVD Drives have transfer speeds that exceeds Hard Disks.
But, I'm not sure if they exceed 150MBps.

 

[Anusha]

oh yeah thanx

hey i'm gonna buy a sata dvd rw it's more expensive than ide one but does it worth it to pay extra for a sata dvd rw

It is well worth it! I hate IDE!!! Look at this stupid cable in my PC...(And stupid IDE port placement too...by Asus!!!)



YUUUUKKKKKKKKK!!!!

Note: This is before installing the new 500GB drive...couldn't take a photo after installing it

 

[Anusha]

But, what's the actual data transfer speed of a SCSI Hard Disk (not the Interface speed)?

Pretty much the same as a SATA equivalent. (or slightly faster)

 

[Anusha]

have you ever use one???????coz they are jolly expensive

I didn't think you would think I'm THAT CRAZY!

No way! A controller alone costs in the region of USD300

 

[Anusha]

Yes, I agree. SCSI are very reliable than most of IDE or SATA.
Just want to know the actual transfer speed.

But nowadays, normal SATA drives are as reliable as the SCSI drives.
SCSI drives used to get a 5 year warranty. So do the new SATA drives (well, not in SL though)