Advice on Disk drives wanted

  • Thread starter Thread starter Networking and Web Hosting
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Networking and Web Hosting

Hi,
I will be needing extra storage and that will mean adding a PCI card to
add an
additional drive, guess eventually I could add more than one on that PCI
expansion card.
Anyway, I see the various types of interfaces; There's
1) E-IDE
2) SATA
3) ATA/100
4) Ultra Series ATA/133 - same as SATA?
5) SATA/150
6) EIDA Ultra /100

How do I compare the performance on these devices? I know to look at buffer
size but there are clearly these other factors regarding the inteface. I
guess much will depend on what is supported by the motherboard or expansion
card.
Thanks in advance for any advice,
Bruce


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Networking said:
Hi,
I will be needing extra storage and that will mean adding a PCI card to
add an
additional drive, guess eventually I could add more than one on that PCI
expansion card.
Anyway, I see the various types of interfaces; There's
1) E-IDE
2) SATA
3) ATA/100
4) Ultra Series ATA/133 - same as SATA?
5) SATA/150
6) EIDA Ultra /100

How do I compare the performance on these devices? I know to look at buffer
size but there are clearly these other factors regarding the inteface. I
guess much will depend on what is supported by the motherboard or expansion
card.
Thanks in advance for any advice,
Bruce
Click to expand...

storagereview.com

comp.sys.ibm.pc.hardware.storage
 
Networking and Web Hosting said:
Hi,
I will be needing extra storage and that will mean adding a PCI card to
add an
additional drive, guess eventually I could add more than one on that PCI
expansion card.
Anyway, I see the various types of interfaces; There's
1) E-IDE
2) SATA
3) ATA/100
4) Ultra Series ATA/133 - same as SATA?
5) SATA/150
6) EIDA Ultra /100
Click to expand...
1 is inclusive of 3,4,6 - they are all Enhanced IDE, aka ATA (for trademark
circumvention?). 66,100,133 are interface transmit rates, but they usually
only work for the buffer burst transfers, sustained throughput is limited by
mechanical factor (i.e. platter density, arangement and RPM), and go at
40-70 MB/s, as opposed to 100 or 133 theoretical maximum.
SATA-150 is SATA (serial ATA) with 150 MB/s theoretical maximum transfer
rate. It is estimated to operate somewhat more efficiently than (parallel)
ATA.
EIDE/ATA comes in 2 channels, each can hook to 2 drives, one as master one
as slave. SATA can hook to one drive, and (usually?) comes as 2 seperate
interfaces.
Motherboards have onboard EIDE, or both. Some boards come with extra ATA100
channels (for more drives total). There are PCI add-on cards for just about
any interface, to be added to just about any motherboard. SATA is the
future, EIDE is the present (and past). Many current "SATA" drives are EIDE
devices with internal IDE-to-SATA bridge chip to make them "talk" to the
SATA interface "natively". There are external (costly ?) adapters for drives
and drive controllers that are of different type.
And then there's SCSI, a whole new ball park (we won't go into that today)
How do I compare the performance on these devices? I know to look at buffer
size but there are clearly these other factors regarding the inteface. I
guess much will depend on what is supported by the motherboard or expansion
card.
Thanks in advance for any advice,
Bruce
Click to expand...

Buffer size is drive-related. It is part of the actual device, regardless of
interface.
 
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