Drive connected to SATA to eSATA converter--can this be made hot-swappable?

Hey guys, I recently acquired a new SATA drive enclosure that has USB 2.0 and eSATA interfaces. It came with a PCI bracket that converts an internal SATA port to an eSATA port. So, using one of the two unused SATA ports on the Mac Pro board, I connected the bracket and have an eSATA port.
It works great! However, it only works if the drive is powered on at boot time and if I disconnect power to the drive while the machine is on, I get odd behaviour (such as Disk Utility hanging on launch).
Does anyone know if there is a way to make this behave like a FireWire or USB drive where one can safely power it off and disconnect it while the machine is still running?
Thanks!

Does anyone know if there is a way to make this behave like a FireWire or USB drive where one can safely power it off and disconnect it while the machine is still running?
Yes, the Addonics 2-Port eSATAII PCI-E Controller for Mac Pro ($39.99) model ADSA3GPX1-2EM will allow you to hot swap the external SATA enclosure.
http://www.amug.org/amug-web/html/amug/reviews/articles/addonics/adsa3gpx1-2em/
If you want SMART support the FirmTek SeriTek/2SE2-E Two Port External Serial ATA PCIe Host Adapter $99.95 will do the job.
http://www.amug.org/amug-web/html/amug/reviews/articles/firmtek/2se2e/
Unfortunately, Apple built the Mac Pro without hot swap bays. At this time you will need a PCIe card to add hot swap SATA capabilities. The Addonics card adds this feature for very litttle $$$.
Have fun!

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The Seritek 1S2 is a 2 port "1.5GB" Card. My 2 new Drives are set to "3GB".
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Do you know what pins to but the jumper block on?
Question 2 :
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Do you mean making 3 Partitions on the 640? 1- OS and Apps, 2 - 50-80 GB Free Space for Swap Files or do you mean Project files, such as Starting a Photoshop or Video File? Is that what you mean? And a third partition to store my other Data files?
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Has anyone ever had a problem with SATA cables when installing new hard drives?
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HELP!!!

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One point the SATA drive connections are poor, slightest movement will cause data corruption, or a sharp bend in cable. make sure connectors are fully home squarely on mobo and drive.
Should be OK.
Either email or here if you need help
cheers
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