Previously, IBM (and perhaps others) had made 500 MB SCSI hard drives which were used in the 500 series.
Also previously, Apple had some "converted" 1 GB EIDE drives made, and it supplied these as well. Also Microtech tried to do the same, using 1.4 GB EIDE drives and apparently the same converter as Apple had used. However, the Microtech-converted drives, although these used the same ADTX converter card, would not be accepted by Drive Setup. Recently, I came across a pair of converted UATA drives. 2.02 GB each. Also an ADTX converter. Labeled AX-HDD-3501. The manufacturing date of these was 1999, whereas the manufacturing date of the IBM 500 MB drives was about 1994. I do not know what these drives were intended for, but the vendor was none of the "usual suspect" Mac vendors. Certainly not intended for a 500 or other SCSI-based PB. Perhaps an OEM device for some kind of technical product. Incredibly, Drive Setup would accept these converted drives. No need for Hard Crash Toolkit(TM)! In previous testing, I thought the performance of the ADTX-converted drives was poor, but after the acquisition of these new converted drives, I decided to perform a retest. I was shocked ... SHOCKED! The performance of the converted drives is actually quite good. Sustained read performance 131 percent of a true SCSI drive. But, sustained write performance only 85 percent of a true SCSI drive. Consequently, I have converted my main 540c (166.7 MHz 603ev) to 3 GB, and I am planning on converting another 540c, probably a 68K one, to 2 GB. I have posted the results of Hard Crash Toolkit's benchmarks for the 500 MB IBM SCSI drive and the 2020 MB Toshiba converted SCSI drive. True SCSI test data: <http://img.photobucket.com/albums/v505/ACFX44501/True_SCSI_500MB.jpg> Converted SCSI test data: <http://img.photobucket.com/albums/v505/ACFX44501/Converted_SCSI_2020MB.jpg > -- PowerBooks is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> PowerBooks list info: <http://lowendmac.com/lists/powerbooks.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[email protected]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/powerbooks%40mail.maclaunch.com/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com
