1) small (9-18GB) SCSI disks are close to the price of similar size IDE disks - the SCSI disks are a little faster due to the interface.
2) large (36GB+) SCSI disks are progressively more expensive than similar size IDE disks - but they are usually considerably faster. 3) It's quite cheap to use IDE raid striping (especially if it is a feature of your motherboard and hence almost free) and this will often be cheaper and faster than a single fast SCSI drive. 4) SCSI raid striping whilst more expensive (particularly with larger disks) is faster than IDE raid striping 5) raid striping is less reliable than a single disk of similar size. 6) Even the relative price difference of large SCSI drives to large IDE drives is small when you consider the "total system ( computer,monitor,scanner,printer,camera,lenses,other accessories)" 7) MAXIMUM disk WRITE performance WILL be acheived if you can dedicate sufficient (enough for one image) system RAM to file cache. eg. 35mm at 4000dpi is approx 110MB so a dedicated 128MB of RAM (£10 Nov2001 -sadly £30 now) for file cache will maximise (provided your not too quick selecting our next op) write performance regardless of whether you have striped 15000rpm SCSI disks or single 5400rpm IDE disk. 7) You will invariably read files more than you write them. I think that covers it ... - it's my only words on the subject regardless. ... you pay your money and make your choice. Steve PS For the record I currently have IDE drives with lots of file cache. I have yet to see acceptably priced SCSI disks of the size I required. ----- Original Message ----- From: "Moreno Polloni" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, February 06, 2002 7:06 PM Subject: [filmscanners] Re: Slightly OT: Hard Drive Speed >>Moreno, on my desk right now I have 4 x 18.2 SEALED NEW IBM U-SCSI-3 bought from PCPARTSINC www.pcpartsinc.com who is a legitimate dealer and more over is a Company so Police and FBI can go and inspect whenever they want. Eache of the drives costed 100$ and they NEW + SEALED + UNDER 3 Years warranty worldwide (I am in Italy and I have already used the warranty on an EXPENSIVE 36GB U-SCSI-160 with free substitution) Sometimes the world is dynamically changing and paradigms are not fitting to everything for every situation.<< I'm not doubting that you can get good deals on surplus drives. IBM makes excellent drives, and if you can get them at a good price, more power to you. The price you paid is not what the typical selling price would be be from your local computer dealer. Here in Canada, a new IBM 18gb 10k U160 drive sells for $350 to $375. For the same amount of money, you can also buy a WD Caviar 100gb 7200 rpm drive. That's more than five times the amount of storage for the same amount of money. ---------------------------------------------------------------------------- ------------ Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body