How to power extra hard drives and fan G5 2.5 DP

Discussion in 'PowerPC Macs' started by pixmaniowa, Mar 24, 2015.

  1. pixmaniowa macrumors newbie

    Joined:
    Jul 30, 2008
    #1
    OK, I have a 2.5ghz G5 DP (PowerMac 7,2)
    I want to use it as a Hard Drive farm. With the two drives in it and 4 additional drives and an added fan I should be able to use it in Target Disk mode.
    I have a PCI-x SATA controller picked out on amazon here:
    http://www.amazon.com/RocketRAID-22.../ref=lh_ni_t?ie=UTF8&psc=1&smid=ATVPDKIKX0DER
    Here are my questions for the group.
    1. Will the computer access the 3TB and 4TB drives I want to use?
    2. Where do I pull the power from?
    3. Do I have to format the drives in a certain method? Journaled or what?
    Thanks for your wisdom in advance.
    R
     
  2. bunnspecial macrumors 603

    bunnspecial

    Joined:
    May 3, 2014
    Location:
    Kentucky
    #2
    The easiest(really only) place to pull power from is to use a Molex splitter off the optical drive power supply.

    I can't speak from personal experience, but you should be okay with 3-4TB HDDs provided that you format them HFS+ and GUID. They will not be bootable-your main boot drive needs to be HFS+ and APM, which will limit it to 2TB. GUID drives are completely readable in PPC Macs, however.
     
  3. poiihy macrumors 68020

    poiihy

    Joined:
    Aug 22, 2014
    #3
    That's.... a very very expensive card :eek:

    The hard drives would be powered by power connectors... You may need a Molex to SATA power adapter(s) for them, and you may need some y-splitters or some other kind of adapter to get more connectors.
     
  4. Gamer9430 macrumors 68020

    Gamer9430

    Joined:
    Apr 22, 2014
    Location:
    Central New Jersey, USA
    #4
    I am currently using a 3TB drive and it works fine
     
  5. jbarley macrumors 68030

    jbarley

    Joined:
    Jul 1, 2006
    Location:
    Vancouver Island
    #5
    OWC has this slick system for adding 3 extra drives, comes at a with mounting cage and cables at a clearence price of $19, was originally $119.99.
     
  6. pixmaniowa thread starter macrumors newbie

    Joined:
    Jul 30, 2008
    #6
    Bought it! Thanks! It is better than what I had which I was having problems fitting in.

    ----------

    So where am I going to get power? There are no Molex power plugs in this Mac. There are the sata power cables that go into the two stock drives. Do I try to split power off those two to the three new drives? Is there enough power there? Or is there somewhere else on the board to tap power from? There must be somewhere planned to pull the power from or the product purchased would not exist. I may be borrowing trouble as there might be instructions with the rack I just bought. But I sure like to learn from others' experience.
    Thanks,
    R

    ----------

    Thanks! Info assimilated!

    ----------

    The card will be worth it when I start using the external sata connections as well.
    I am always expanding my HD Farm. I shoot thousand of 25mb Raw files and they just get bigger when I PS them.
     
  7. jbarley, Mar 25, 2015
    Last edited: Mar 25, 2015

    jbarley macrumors 68030

    jbarley

    Joined:
    Jul 1, 2006
    Location:
    Vancouver Island
    #7
    I'm sure the cage will come with instructions, but I'd wager a guess they get the power from the back of the optical drive, which in my G5 is an ATA drive.
    Here is a link to a webpage showing how to split the molex power connector on the rear of the optical drive. (scroll down 2/3 the page)
     

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  8. pixmaniowa thread starter macrumors newbie

    Joined:
    Jul 30, 2008
    #8
    Awesome - - Thanks - - Last detail?

    You guys are AWESOME!!!! Thank you.
    Last question (maybe)
    I was planning to use the computer in Target Disk mode. These are basically external drives for my new black Mac Pro.
    Will this cut down on heat since I am not running the CPU's?
    That's the last detail.
     
  9. pixmaniowa thread starter macrumors newbie

    Joined:
    Jul 30, 2008
    #9
    Sorry, I read Molex but did not finish the sentence to "off optical drive." Thanks for the info.;)
     
  10. bunnspecial macrumors 603

    bunnspecial

    Joined:
    May 3, 2014
    Location:
    Kentucky
    #10
    It's probably not a great choice for TDM/external storage use, and will use a LOT of power.

    First of all, I'm not sure you'll be able to access all the drives in TDM. This was an issues in older ATA based Macs. I'm pretty sure when I had my Xserve G5 booted into TDM, all the volumes mounted, but I'm not sure if those attached to a controller card would work.

    Most importantly, in my experience when G5s run in TDM, there effectively is no fan control. What this means is that the fans(all 9 of them) will run at full blast. It's rare for this to happen in normal operation, but will happen when you do something like spend a lot of time in open firmware, single user mode, or TDM. G5s are normally fairly quiet, but when all fans get cranking at full blast they get LOUD. I was running fsck in single user mode on my work G5 a few weeks back, and one of my coworkers kept telling me that my helicopter was about to take off :)

    If you want to use it for remote storage, I'd do it as NAS and connect it to your MacPro via Gigabit Ethernet.
     
  11. pixmaniowa thread starter macrumors newbie

    Joined:
    Jul 30, 2008
    #11
    OK, I'm flexible. I just want to get rid of my 5 external drives with 5 boxes and 5 power cords etc. I tried a Raid box, which I have for sale by the way, but it used it's own operating system and when one of the drives started having problems which caused some files to corrupt I could not find any way to repair it. I had backups but the only way the disk would be fixed was to reformat it. ME NOT HAPPY!
    So how do I do what you are saying?
     
  12. pixmaniowa thread starter macrumors newbie

    Joined:
    Jul 30, 2008
    #12
    Actually, I think I understand. I can just set up file sharing and use the old G5 attached to the network. Thanks.
     
  13. poiihy macrumors 68020

    poiihy

    Joined:
    Aug 22, 2014
    #13
    Ok. File sharing is very easy. Just go in sharing preferences and turn on file sharing.

    You can set this thread as resolved now (Click "Edit" on the first post and "Go Advanced" and change prefix).

    Note that G5s use a lot of power and make a lot of heat.
     

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