Released on July 21, 2011. Core i5 or Core i7 Processor. Thunderbolt. This unit is also used to run the Mac Mini Server configuration.

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upgrading to 2 ssd raid 0

after installing the ifixit dual hd kit & creating the raid 0 [with the 2 ssd drives in disk utility]

  • when restoring the boot drive to the raid this error shows *

"restore failure an error (32) occurred while copying. (Broken Pipe)"

please advise on any ideas of what's wrong

  • already tried * different block sizes like 32k - 256k
  • ssd drives are both Sandisk 256 gb Ultra Plus
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thanks for the reply

the 2 ssd drives are the same (sandisk ultra plus 256gb)

- are you suggesting that if I transfer the boot partition to a faster drive before transfering to the ssd raid?

• [the boot partition is currently on a typical 500gb hard drive]

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the plan is to switch from one 256gb ssd to two 256gb ssd drives in raid 0. the 2 ssd drives have previously been used as boot drives in the 2011 mac mini & early 2011 15" MBP

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the 500 gb drive the mac mini came with is currently in use as a bootable backup.

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RAID 0 stripes the data across the two devices. By design the I/O to the devices and the devices them selves need to be Matched as there is no way to buffer the write or the read if one device is slower or if the I/O to the device is slower in a RAID 0 setup. In this case the I/O path is not the same here as you are using the slower optical drives SATA connection. Other versions of the mini offer dual SATA ports that are the same speed and offer RAID 0 as an option (server models).

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both drives identify as 6 gigabit on system report

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You've fallen into one of the issues with a RAID 0 setup as the I/O must be exactly the same for each drive. In this case the Optical drive I/O is slower so it can't span across. You'll need the newer dual HD unit that supports it. Then replace the HD's for SSD's if that is what you want.

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