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<blockquote data-quote="warrenbert" data-source="post: 97920">OSX has software raid built-in, so you could set up a RAID 0 array using Disk Utility.&nbsp; The major drawback is that you cannot boot off of your RAID array, meaning you must have a minimum of three disks (boot disk, 2xRAID disks).So, since the G5 only has two disk connectors, you would indeed need an additional PCI Storage Controller.&nbsp; A basic controller card (either ATA or SATA) would let you use OSX software RAID.&nbsp; For maximum performance, you could get a card with a built in hardware RAID controller.&nbsp; That would let you boot from the array, but they will cost you at least $300 just for the card.I'm not sure you can build a RAID array with individual external drives.&nbsp; There are aftermarket RAID enclosures that house more than one drive and connect through IEEE1394 ports (both 400 &amp; 800).&nbsp; They are quite expensive and you would get better performance connceted directly to a PCI slot.</blockquote>

[QUOTE="warrenbert, post: 97920"] OSX has software raid built-in, so you could set up a RAID 0 array using Disk Utility. The major drawback is that you cannot boot off of your RAID array, meaning you must have a minimum of three disks (boot disk, 2xRAID disks). So, since the G5 only has two disk connectors, you would indeed need an additional PCI Storage Controller. A basic controller card (either ATA or SATA) would let you use OSX software RAID. For maximum performance, you could get a card with a built in hardware RAID controller. That would let you boot from the array, but they will cost you at least $300 just for the card. I'm not sure you can build a RAID array with individual external drives. There are aftermarket RAID enclosures that house more than one drive and connect through IEEE1394 ports (both 400 & 800). They are quite expensive and you would get better performance connceted directly to a PCI slot. [/QUOTE]

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