Yes, you can do RAID 10 just using Disk Utility. Sent from my iPhone
> On Aug 31, 2014, at 6:34 PM, LuKreme <[email protected]> wrote: > > >> On 30 Aug 2014, at 12:01 , Dinse, Gregg (NIH/NIEHS) [C] >> <[email protected]> wrote: >> >> Hi, >> >> I have a 2012 Mac Pro tower (with 4 drive bays), running MacOSX 10.9.4 (the >> latest version of Mavericks). >> >> Can I use Apple's Disk Utility to create a RAID10 disk array? >> >> That is, could I put 4 equal-sized hard drives in the Mac Pro tower and then >> use Disk Utility to create a RAID10 setup, which is a stripe of mirrors? > > I don't think so. If I recall correctly, DU does either Raid0 or Raid1, but > not Raid10. However, since a RAID10 is just a RAID1 of a RAID0 out's quite > possible that you can first create the RAID0 and then create the RAID1 > > You will need 5 drives total (4 for the RAID and a boot drive). > > Erase the 4 drives, pair two of them into a raid0 (Pretty sure OS X calls it > a Mirror and doesn't use "RAID0"), then create the striped array. If it lets > you create the striped array, then you are good to go. > >> If this is possible, should it be nearly as good as a commercial software >> RAID solution, as long as I am happy with RAID10 and do not care about RAID5 >> or RAID6? > > I've never had an issue with the OS X softRAID, but I've only used it off and > on since I got my firs MacPro1,1. > > >> I know that Disk Utility does RAID0 and RAID1, but I do not know whether it >> can be used to combine those software RAIDs. >> >> For example, suppose my 4 hard drives are named Disk1, Disk2, Disk3, and >> Disk4. I was wondering if I could use Disk Utility to combine Disk1 and >> Disk2 (via RAID1) into Mirror1, and likewise combine Disk3 and Disk4 (via >> RAID1) into Mirror2, and then combine Mirror1 and Mirror2 (via RAID0) into >> StripedDisk. In particular, if all disks are 3 TB, then I was hoping to end >> up with a 6-TB RAID10 disk array, which would be a stripe of two 3-TB >> mirrors. > > The drives have to be identical in size. This means same model and > manufacturer, probably. > >> If this is possible, would you trust it? > > I don't know why not, but I would never sacrifice that much disk space just > for redundancy. > >> I figure all disks must be the same size, but do they have to be identical? >> In my case, they would all be Seagates and all have the same nominal sizes >> and speeds, but the exact models (and therefore exact sizes to the byte) >> might differ. > > If I am remembering correctly, I could not create a RAID with drive that > differed in size by less that 100MB, but that was a long time ago. > > -- > Be careful what you wish for. You never know who will be listening. Or > what, for that matter. > > _______________________________________________ > MacOSX-talk mailing list > [email protected] > http://www.omnigroup.com/mailman/listinfo/macosx-talk _______________________________________________ MacOSX-talk mailing list [email protected] http://www.omnigroup.com/mailman/listinfo/macosx-talk
