On 21 Apr, this message from John Schmidt echoed through cyberspace: > On Sunday 21 April 2002 08:36 am, John Schmidt wrote: >> Hi, >> >> I have a Power Tower Pro with a G3/466 card running with scsi drives. I am >> running woody with kernel 2.2.20. The drive is hooked up to the internal >> scsci bus which supposedly can do 10MB/sec transfers (I think I got the >> right specs; I do know that the external bus is half the speed of the >> internal). The drive in question is: >> >> mesh: target 1 synchronous at 10.0 MB/s >> Vendor: QUANTUM Model: FIREBALL_TM3200S Rev: 300X >> Type: Direct-Access ANSI SCSI revision: 02
This disk is very low-speed (and low-quality on top of that). There's no reason to put that on a faster bus. > Oops, I goofed and copied the wrong drive: > > Vendor: QUANTUM Model: FIREBALL SE8.4S Rev: PJ0A > Type: Direct-Access ANSI SCSI revision: 02 > Detected scsi disk sdc at scsi0, channel 0, id 2, lun 0 > mesh: target 3 synchronous at 10.0 MB/s I don't know that disk, but I did get those hdparm numbers you reported for all (reasinably fast) SCSI disks on the internel (aka MESH) SCSI on oldworlds. If that Fireball SE is a lot faster than the TM (which I doubt..), than you could add a more recent SCSI card (some SYM or Adaptec...), but that won't be a cheap solution. I have myself made very good experience with a Promise IDE card (Ultra66) with a fast IDE disk, and I get thes hdparm numbers: /dev/hda: Timing buffer-cache reads: 128 MB in 2.90 seconds = 44.14 MB/sec Timing buffered disk reads: 64 MB in 5.19 seconds = 12.33 MB/sec Keep in mind that this is with a 3-year old disk; today's disks are a lot faster. However, as you can see when comparing buffer reads and disk reads, the oldworld systems are very limited performance-wise, compared to today's standards. So, my adice would be that if you do want to invest in it, get a cheap IDE card and a good value 7200 RPM IDE disk. Today's IDE's beat 2-years old SCSI disks.... Keep in mind however that the majority of IDE cards are not bootable on the Mac, so you would need to keep a SCSI disk for booting. Cheers Michel ------------------------------------------------------------------------- Michel Lanners | " Read Philosophy. Study Art. 23, Rue Paul Henkes | Ask Questions. Make Mistakes. L-1710 Luxembourg | email [EMAIL PROTECTED] | http://www.cpu.lu/~mlan | Learn Always. " -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
