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Old 07-16-2005, 11:20 PM   #1
linuxhippy
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Optimizing drive speed


My harddrive just crashed after I backed it up, so I installed 2 slower drives (each are 5400 rpm, one is 6 GB and the other 4 GB). I'm installing FC4 on them now. My /home partition is on the 4 GB while my /boot, / and /swap partitions are on the 6 GB. How can I optimize the speed on these (one is 33 MHz, and the other 66 on the same data cable)?
 
Old 07-17-2005, 12:19 AM   #2
WhatsHisName
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The best option is to configure both drives as master/single drives and to place one drive on the primary IDE channel and the other on the secondary IDE channel.

Of course, getting a better drive is an even better option.
 
Old 07-17-2005, 12:43 AM   #3
musicman_ace
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First off, hard drive transfer is in MB per second, not MHz.
Since cdroms operate or transer at 33MB, like the other dude said, place the 33MB capable hard drive on that IDE channel.

For the Hard drive that can sustation 33MB transfers, type hdparm -X66 /dev/hdx
For the Hard drive that can sustation 66MB transfers, type hdparm -X68 /dev/hdx

replace hdx with whichever is hda, hdb, hdc or so on.
 
Old 07-18-2005, 09:00 AM   #4
linuxhippy
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I didn't know about that hdparm command. I see that hdparm -g lists the geometry (cyl/hd/sec) of your drive. I'm thinking it picks up the values that are specified in the BIOS-is this right?

Oh, also I don't think I can put the ATA 66 drive on a separate cable from the ATA 33 drive since I have a CD Writer and a DVD player on the other cable (4 IDE devices total). Is there a way to put 3 IDE devices on one cable?
___________________________
 
Old 07-18-2005, 10:23 AM   #5
WhatsHisName
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No, but you can install an IDE controller card in addition to the standard IDE controller.

My favorite is the Promise Ultra100 TX2, which goes for about US$20-25. On older pre-ATA/100 systems, I leave the CDs, DVDs, etc. on the standard IDE controller and put the hard drives on the IDE controller card, usually on different IDE channels.
 
Old 07-18-2005, 11:35 AM   #6
linuxhippy
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That controller card looks good at newegg.com-I'll have to see if I have an available slot. So, if I had that I could put each drive on a separate cable and enable ATA66 on the one-would I see much of a speed difference in a 5400 RPM drive?
 
Old 07-18-2005, 12:58 PM   #7
WhatsHisName
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Probably, but the ATA/33 drive will be dead slow no matter what you do. You should get an OEM drive to go with the controller while youíre at newegg (e.g. Western Digital 80GB (WD800JB / N82E16822144122) for US$56.00).

The two IDE channels on the Promise card can read/write simultaneously and/or independently of each other. Itís a nice card for setting up a simple linux software raid0 or raid1.
 
Old 07-20-2005, 09:20 AM   #8
tommyr1216
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You could consider software raid as well. Striping your data across both drives (put them on separate ide channels) should improve performance.
 
Old 07-21-2005, 05:49 PM   #9
linuxhippy
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I went and bought a Promise ULTRA100TX2 PCI IDE card (a RAID controller) and want to see how my current 2 drives perform on that. I am interested in setting up a RAID1 system on these. 1 drive is 4 GB (my home partition drive) and 1 drive is 6 GB (my boot, swap, and / partition drive). With this partition scheme (not identical) is it possible to use RAID1? I've never used RAID and just started reading a Slackware How to-How would I set this up in FC4?
 
Old 07-21-2005, 06:38 PM   #10
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raid1 is possible, but you will have to format both disks as 4 gig drives.
 
Old 07-22-2005, 05:00 AM   #11
linuxhippy
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RAID isn't for this slow pc-thanx for the input!
 
  


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