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Dual Seagate Barracuda ST32550N Staggered Spinup

Created on April 18, 2023
Indexed on April 18, 2023 at 05:58 PM

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A quick demonstration of the "Enable Motor Start" feature on two of my Seagate Barracuda ST32550N SCSI hard drives connected to the onboard controller of my Asus P2B-DS motherboard.

When you have multiple hard drives connected to a single power supply, it's very important to configure them to wait for the SCSI controller to send a command for them to spin up individually. Hard drives draw the most current while they are spinning up, as opposed to when they have finished spinning up and are just sustaining their rotation.

The top drive (SCSI ID 0) has bad bearings. I'm not planning to use this setup in this case (as I get the feeling the cooling here may be inadequate for two 7200 RPM drives right next to each other); I just set this up here for the recording which will supplement a page I'm writing.

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re9177 - April 21, 2023 at 10:06 AM

good tips 4 SCSI PCz:
You can disable the on-board IDE controller in the BIOS to speed up the boot process and possibly release some IRQs and/or resources overall on the machine :))

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