[NTLUG:Discuss] OT: SCSI hard drive sizes...

[Richard Geoffrion]

Robert Pearson wrote:

>On 10/23/06, Richard Geoffrion <ntlug at rain4us.net> wrote:
>  
>
>>What is it about the doubleing-in-size nature (4.5, 9, 18, 36, 73, 147
>>gig)  of SCSI drives?  Why don't you see  odd sized SCSI (or SAS) drives?
>>    
>>
>
>Because of the nature of this "break-through".
>
>  
>
<Snip the breakthrough>

Yes.. .but why is it we see 40, 60, 80, 100, 120, 160, 200, 250, 300, 
400, and 500 gig drives in PATA or SATA format but we only see 
9,18,36,73,147Gig SCSI drives?  What is it about the SCSI interface that 
seems to restrict it to these what??  powers of 3??  Why aren't there 
80,100,120 or 250Gig SCSI drives out there (or have I just not found them?)?

If PATA/SATA can do it -- why cant SCSI/SAS?