Running a Raid Zero with Disk Utility. What am I doing wrong? in Software Stuff Posted December 12, 2009 I have PowerMac G5 with 5 hard drives in it. A single 250GB hard drive is used for OSX, apps, and one admin account. The remaining (4) 500GB hard drives are striped together in a software RAID array by Disk Utility. All of the standard user accounts are on that volume. I mapped all of the accounts to that volume instead of the 250GB drive. This give me ~1.8TB of usable space for all of the files created by all the people in my family all while significantly improving data throughput on the computer. I have seen peak data transfers of 122MB on the array when copying files from one place to another. For a backups of this setup I have a FW Drobo with 3.5TB of hard drives in it. I use an application called Crashplan that does a local backup to the Drobo as well to Crashplan Central which is completely offsite elsewhere here in the U.S. If a drive fails in the RAID 0 array it will be only an inconvenience to replace the drive and nothing more. I expanded the array not even a week ago from 3 drives to 4 and a complete rebuild of the array was needed to expand the volume to 2TB. As long as you know how to configure the setup, you should be good to go. I've used Apple's software RAID for nearly 2 years and not once had a problem with it.