8 core mac pro delivered today!!!

Discussion in 'Mac Pro' started by bbplayer5, Apr 19, 2007.

  1. bbplayer5 macrumors 68030

    Apr 13, 2007
    But I cant play with it until I get home :( I need to decide if i want to run parallels or bootcamp... grrr...

    Going to install OSX on a raid 0 with 2 10k raptor drives :D
  2. psychofreak Retired


    May 16, 2006
    It depends on what you want to run and how much RAM you have, details please :)
  3. Multimedia macrumors 603


    Jul 27, 2001
    Santa Cruz CA, Silicon Beach
    System On A Raid 0 Is A Dangerous Configuration Isn't It?

    Congrats. Tell us how you do that. Won't it be dangerous to have the system and apps running on a Raid that could fail? :eek:
  4. Chaszmyr macrumors 601


    Aug 9, 2002
    I strongly advise against RAID 0. It is really not adequately stable. *Has had bad experiences*
  5. X1Lightning macrumors 6502


    Feb 19, 2007
    Raid 0 is no more dangerous than running a system with only one drive.
    cept here you get the speed boost of 2 drives.

    With any type of system you need to have a backup plan.
  6. RichP macrumors 68000


    Jun 30, 2003
    Motor City
    If you drive failure rate is "x", and you have 2 drives, you double your chance of failure. Include the possibility of corruption in the read/write process that is more detrimental in RAID-0, and it is a more dangerous proposition.

    Keep in mind all that time saved with RAID-0 is lost the milisecond the computer crashes.
  7. eldino macrumors member


    Mar 8, 2007
    The tendency by CPU manufacturers to multiply cores-number (2,4,8,16,40!) is really worth the cost? In terms of mere performances, I mean..
    If i dont run more than 4-5 apps, could i take advantages from a 8 core workstation? and if the software i run is not optimized for a >1 number of cores?

    Just asking :)
  8. roland.g macrumors 603


    Apr 11, 2005
    One mile up and soaring
    Early adopter.
    Under utilized.

    You have a rev. A of a machine that isn't totally optimized for everything it has, essentially being on the cutting edge of something that already needs improvement to realize it's full potential. Not to mention the lack of Apps to try to come close to throttling it.

    I hope you have some uses for it that will demand something of it. And that it's worth it at the end of the day.
  9. NewbieNerd macrumors 6502a


    Sep 22, 2005
    Chicago, IL
    Actually, if your drive failure rate is x and you have 2 drives, your chance of failure is 1 - (1 - x)^2. It's just that if x is pretty close to 0, that value is pretty close to 2x. :)
  10. excalibur313 macrumors 6502a


    Jun 7, 2003
    Cambridge, MA
    I don't understand why people get so freaked out about the failure rate of a raid 0. It should just be more likely to fail as a single drive, but drive failure is a pretty rare event. (My family has had a total of maybe 10 computers in the last 20 years and I never remember a single one failing.) Regardless of the actual failure rate, mearly doubling it shouldn't be so catastrophicly high that it prevents people from doing it. Right? I agree that backup plans are a really good idea, but raids are too. Could someone explain why it is such a bad idea that it shouldn't be tried? How are other raids like 3 or 4, are they as bad?
  11. brooker macrumors regular

    Apr 4, 2007
    First off, RAID 0 isn't really raid, because there is no redundancy (the R in RAID). Any single drive failure will destroy all data on all drives. RAID 0 is also known as 'strip set without parity'.

    RAID 1 (mirroring) tends to be a good option, because if it is implemented correctly, it can increase read times which should boost performance. Write times are not increased, and may be decreased if both drives are on the same controller, but it depends on your applications.

    No one really uses RAID 2,3,4.

    RAID 5 is strip set with parity, so your data is protected, and you get the speed up from striping. but it requires 3 disks, and usually a hardware controller, so it's a little harder to implement.

    You can learn more... um... here: Wikipedia

    hope that helps.

    Serious congrats to the OP! what a great machine. Don't let anyone tell you otherwise. :)
  12. bbplayer5 thread starter macrumors 68030

    Apr 13, 2007
    This machine is fantastic so far!! Raid 0 working well, and yes, I have a backup plan.. im not stupid :p

    I do a lot of video encoding, so I wanted to have a raid.. If it bites me in the end, i can just switch back to single drive, no big deal.
  13. Spanky Deluxe macrumors 601

    Spanky Deluxe

    Mar 17, 2005
    London, UK
    What a genuinely constructive comment and asset to this forum...

    Raid 0 is designed for fast system drives. The idea is that you have your OS and your applications in a Raid 0 system for the speed and you keep all your data somewhere safer.

    As far as the failure rate, well if a drive has a 10% probability of failing in x amount of time and you have two of them which are in a Raid 0 configuration then the probability that your Raid 0 array fails in x amount of time is 19%. ((0.1 * 0.1) + (0.1 * 0.9) + (0.1 * 0.9)) * 100

    Whatever you do, don't store your data on that array, at least not permanantly. I once made the silly mistake of getting two 300gb drives and putting them in a Raid 0 array for my data. One drive turned out to cause errors but I could never work out which one it was and by that point I already had 400gb of data on the array. I couldn't un-link the drives until I saved up the pennies for another big drive! I was a silly idiot who vainly wanted to have a single partition with a size over 0.5TB. What a fool!!
  14. bbplayer5 thread starter macrumors 68030

    Apr 13, 2007
    This thing absolutely flies!! I love it! Video encoding with Virtualhub is bliss!
  15. Lord Flashheart macrumors regular

    Lord Flashheart

    Apr 10, 2007
    Cardiff by the Sea, CA
    Congratz on the new rig! Give us some benchmarks :)
  16. mugwump macrumors regular

    Jan 10, 2004
    RAID 0 is not double the failure possibility. There's half the load/activity on each of the drives.

    I've run RAID 0 for years now with no issues, yet I've had a few laptop drives that failed.

    Get over it, and stop being such a pansy. Any drive can fail and they all require backups.
  17. Max Payne macrumors 6502a

    Oct 27, 2006
    Brisbane, Australia

    How many cores did you manage to use?
  18. Pressure macrumors 68040


    May 30, 2006
    I got RAID 0 running for 4 years now without a hick up.

    It shouldn't prove problematic (unless you are pessimistic) but a backup plan is in order.

    I would say that RAID 0 is NEEDED if you do any video-editing.
  19. disconap macrumors 68000


    Oct 29, 2005
    Portland, OR
    Um, people? I think he just wants to see how fast he can get it running. Which I applaud, I am into getting the most out of hardware that you possibly can (even if it's not necessary, provided that I am not relying on the machine for work).

    As for RAID 0, I've never had the OS on one, but I've been using them for a couple years as scratch drives and never had a failure, but had normal back-up drive fail. Mathematically, yes, there is double the chance of failure, since you are relying on two drives not failing, but in my experience brand new drives tend not to fail. Chances may be double, but they're still pretty slim...
  20. netguy macrumors newbie

    Mar 3, 2007
    If you have are continually getting a system snapshot, or backup of your OS partition, then sure...you can run a RAID0. Its the pain, or reloading everything that deters most from that setup...+ the performance increase is not outstanding.

    I do however like running RAID 0 on data sets, as long as I have an exact duplicate of that dataset, that it gets backed up to.

    My dataset runs 2 x 500GB SATA drives mounted in a dual drive FW800 enclosure (Mercury Elite OWC AL-800), running a RAID0. I get about 70mb/s real time, which is great, as I work with massive video files.

    Fortunately, this dataset gets backed up to an exact replica, every night. So in a way, I have a striped mirror.

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