Windows 8 and 8.1 Forums

PSU questions

  1. #1


    Posts : 5,707
    Windows 8.1 Pro

    PSU questions


    Merry Autumn everyone to everyone that is in the autumn equinox!

    I'm right now about a third or so of the way complete with rebuilding and modding my computer case right now, and now I'm at the point of modding half the case for the PSU and other items.

    So I have questions about the power supply in general. I'm looking at a roughly 700 watt max as I will be using AMD's new APU graphics chip (Radeon 7650) in CrossFire with the Radeon 7870. I will also have a total of 13 or 14 SATA connectors: 8 hard drives (5,200-5,900 RPM) in a RAID 5 array, two internal 2.5" hard drive SATA connections as well as two external 2.5" connections, and maybe one or two mSATA external connectors. I was wondering if I can use a couple of spare SATA power cable from my previous PSU (the old and new PSU's are modular) and use those with the new SATA power cables. I will be splicing and cutting and soldering and modding the cables so they are pretty much built into the case in the front as well as the external ones. I don't know for sure if I'm tampering with the gods of electricity and power in doing so, because I don't really want to have a power problem when I'm gaming only to find out I needed either more power or less SATA connectors; which would be problematic as I will need a LOT of SATA power connectors to future proof my build for at least five or eight years.

    Thanks!

      My System SpecsSystem Spec

  2. #2


    Can I ask why you are doing a RAID 5 array with all of those disks?
      My System SpecsSystem Spec

  3. #3


    Posts : 5,707
    Windows 8.1 Pro


    Quote Originally Posted by pparks1 View Post
    Can I ask why you are doing a RAID 5 array with all of those disks?
    The eight hard drives I'll be using will be in a RAID 5, but I'll be starting out initially with two hard drives and expand out as time and money and hard drive space dictate. My need for a RAID 5 is mainly for digital copies of DVDs I have (this is legal, I've checked ) as well as user data storage for other peoples' systems that I do Windows installs on since I don't do upgrade installs. I wipe down the hard drives--in this case it's been primarily laptops for me--and do a through reformat of the disk. I'm also planning on using WAIK or the newer version to install Windows onto that disk, then copy back the user data onto the disk, pop it back into the system and boot it up. And, this is partly performance based as well since I'll be using a virtualized environment of my native install of Windows 8 I'll have on a SSD, and use that as a tester for programs and such since I've lived and learned what happens when you do that. Office 2010 screwed up on me back with Windows 7 when I was attempting to make it a portable app.

    Shoot, I just remembered I will also have an external 3.5" SATA connector as well for the odd chance of needing it for my DVD drive or a hard drive.
      My System SpecsSystem Spec

  4. #4


    Quote Originally Posted by Coke Robot View Post
    Quote Originally Posted by pparks1 View Post
    Can I ask why you are doing a RAID 5 array with all of those disks?
    The eight hard drives I'll be using will be in a RAID 5, but I'll be starting out initially with two hard drives and expand out as time and money and hard drive space dictate.
    Perhaps you are unaware that RAID 5 requires at least 3 hard drives.

    Are you just going to use the storage spaces feature of Windows 8?
      My System SpecsSystem Spec

  5. #5


    Posts : 5,707
    Windows 8.1 Pro


    Quote Originally Posted by pparks1 View Post
    Quote Originally Posted by Coke Robot View Post
    Quote Originally Posted by pparks1 View Post
    Can I ask why you are doing a RAID 5 array with all of those disks?
    The eight hard drives I'll be using will be in a RAID 5, but I'll be starting out initially with two hard drives and expand out as time and money and hard drive space dictate.
    Perhaps you are unaware that RAID 5 requires at least 3 hard drives.

    Are you just going to use the storage spaces feature of Windows 8?
    Balls, I take that back, it's RAID 10 I'm going after, not 5.
      My System SpecsSystem Spec

  6. #6


    A RAID 0 (stripe) can do 2 drives, but offers 0 redundancy. I drive fails and you lose it all
    a RAID 1 (mirror) can do 2 drives, but only makes 50% of drive space available
    A RAID 5 array (striping with parity) needs a minimum of 3 drives.


    For you, I would just use storage spaces. Grow them as you need them. You might find with 2-3-4TB hard drives, you won't actually need 8 of them.
      My System SpecsSystem Spec

  7. #7


    Quote Originally Posted by Coke Robot View Post
    Quote Originally Posted by pparks1 View Post
    Quote Originally Posted by Coke Robot View Post
    The eight hard drives I'll be using will be in a RAID 5, but I'll be starting out initially with two hard drives and expand out as time and money and hard drive space dictate.
    Perhaps you are unaware that RAID 5 requires at least 3 hard drives.

    Are you just going to use the storage spaces feature of Windows 8?
    Balls, I take that back, it's RAID 10 I'm going after, not 5.
    RAID 10 requires a minimum of 4 drives. (The number must be even.) I doubt that you can convert a RAID 0 or RAID 1 array to RAID 10 at a later date without losing the data on the drives.

    I had a 4 drive RAID 10 array a couple of years ago. I gave up on it after finding that the array was re-verified after most PC crashes. Even though they were 500GB drives, it still took hours. The PC remained usable while that was going on, but the HD performance was poor. Not worth the trouble, in my opinion.

    Just out of curiosity, how are you acquiring that many SATA ports? Add in card?
      My System SpecsSystem Spec

  8. #8


    Posts : 5,707
    Windows 8.1 Pro


    Quote Originally Posted by bobkn View Post
    Quote Originally Posted by Coke Robot View Post
    Quote Originally Posted by pparks1 View Post
    Perhaps you are unaware that RAID 5 requires at least 3 hard drives.

    Are you just going to use the storage spaces feature of Windows 8?
    Balls, I take that back, it's RAID 10 I'm going after, not 5.
    RAID 10 requires a minimum of 4 drives. (The number must be even.) I doubt that you can convert a RAID 0 or RAID 1 array to RAID 10 at a later date without losing the data on the drives.

    I had a 4 drive RAID 10 array a couple of years ago. I gave up on it after finding that the array was re-verified after most PC crashes. Even though they were 500GB drives, it still took hours. The PC remained usable while that was going on, but the HD performance was poor. Not worth the trouble, in my opinion.

    Just out of curiosity, how are you acquiring that many SATA ports? Add in card?
    RAID 1 a possibility? I haven't polished up on my RAID terminology since a couple years ago, but I remember a RAID that had performance and redundancy with a 50 percent failure rate. So ideally, if I have my 8 hard drives, 4 of which can die, more than that I am sodomized.

    My plan is to use the onboard SATA connectors for the external connectors, maybe use one for a SSD. The RAID array will be used with a hardware RAID card, if I believe I can find one that has eight connectors.
      My System SpecsSystem Spec

  9. #9


    Posts : 5,707
    Windows 8.1 Pro


    Quote Originally Posted by pparks1 View Post
    A RAID 0 (stripe) can do 2 drives, but offers 0 redundancy. I drive fails and you lose it all
    a RAID 1 (mirror) can do 2 drives, but only makes 50% of drive space available
    A RAID 5 array (striping with parity) needs a minimum of 3 drives.


    For you, I would just use storage spaces. Grow them as you need them. You might find with 2-3-4TB hard drives, you won't actually need 8 of them.
    I do believe RAID 1 was the way to go for me as I haven't looked up on RAID for a while.

    I was thinking of doing Storage Spaces as it sounded interesting when I read about it. I'll need to consider all options, but preferably, the solution that offers redundancy AND increased performance from the hard drives will be what win out.
      My System SpecsSystem Spec

  10. #10


    Posts : 5,707
    Windows 8.1 Pro


    But back to the original question , I feel like I already know the answer to this, but can I use more SATA cables over the PATA cables with the PSU? If the PSU has say, three SATA power cables with three connectors with each cable, and then use two more SATA cables with three connectors, will I be able to use those cables safely altogether and all those drives?
      My System SpecsSystem Spec

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