Difference between RAID 1+0 and RAID 5

I already read the FAQ above, but could someone give me some details on the pros + cons of RAID 1+0 versus RAID 5. I have 4 WD 80GB Special Edition drives on a HighPoint RocketRaid 1540 Adapter and am considering which RAID to set up.

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More about difference raid raid
  1. Short answer:

    <b>RAID 0+1</b> will give you better performance but only 160GB usable space

    <b>RAID5</b> will give you slightly less performance but you'll have 240GB usable space. Plus its a bit more flexible as to what you can do. You basically only lose one drive's worth of space, regardless of the total number of drives in the array. So, for example, you had 6 80GB drives (480GB raw space), you would only lose 80GB of that total, leaving you with 400GB raw space.

    In the end its basically a question of whether you are more concerned with performance vs. usable disk space. You will still see better performance with RAID5 over a single disk or RAID1 though.
  2. Cool, that's what I wanted to know. I'll just go with RAID 1+0 then. I don't need a lot of storage space - heck, even 80 GB is a lot for me! I just want it to be fast and secure.
    Thanks for the speedy and simply answer.

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  3. <b><A HREF="http://www.acnc.com/04_01_0p1.html" target="_new"><font color=red>RAID 0+1</A></font color=red></b> is totally different compared to <A HREF="http://www.acnc.com/04_01_10.html" target="_new"><font color=blue><b>RAID 1+0</A></b></font color=blue> (or its correct name <b>RAID 10</b>)

    :smile: Good or Bad have no meaning at all, depends on what your point of view is.
  4. I checked the links - very helpful. Okay then, here's some more detail. The newest BIOS version for my RocketRaid adapter will allow RAID 10 or RAID 5 (as well as RAID 0, 1, or JBOD), Which of the two do you think will give me the best speed/saftey ratio? Remember this is just a "regular" home PC, not a server. I'm still leaning towards 10, any other opinions?

    <A HREF="http://rebturtle.com" target="_new">rebturtle</A>
    <A HREF="http://www.geocities.com/rebturtle/TurtleTech.html" target="_new">My System</A><P ID="edit"><FONT SIZE=-1><EM>Edited by rebturtle on 05/09/03 11:10 PM.</EM></FONT></P>
  5. Is your OS going to be running from this array? Looking at your system it seems as though these four hard drives are all you have. If so, you definitely do not want RAID5. In any case I think a using RAID5 on your system would be a bad idea because the RAID card will eat up your CPU power for the RAID5 parity calculations.

    Instead, I would recommend you make two arrays, one RAID0 array for your system and programs / games and another RAID1 array for critical data storage. This will give you more storage space than a RAID10 and potentially better performance depending on what you are doing.

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  6. Interesting idea. What I was considering was to use the 4 80GB Special Editions for RAID, and buying one of the new <A HREF="http://www6.tomshardware.com/storage/20030501/index.html" target="_new">Raptors</A> to use as my C drive. I haven't had too much luck trying to run my OS on a RAID array.

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  7. Are you sure its RAID10? Very few IDE RAID controllers, other than the expensive high end ones, support RAID10. I would double check and make sure its not the more common RAID0+1.
  8. Quote:
    Are you sure its RAID10?

    His Highpoint RocketRAID 1540 supports it.

    :smile: Good or Bad have no meaning at all, depends on what your point of view is.
  9. With the newest BIOS update, the card now supports RAID 10 and 5. The update removes RAID0+1 from the menu. Check it <A HREF="http://www.highpoint-tech.com/rr1540.htm" target="_new">here</A>.

    <A HREF="http://rebturtle.com" target="_new">rebturtle</A>
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  10. Raid 0+1 will be the easiest to setup, and PROBABLY give you the least amount of hastle.

    Having a Raptor 10k drive as the boot drive is also a good idea, one i have considered myself :)

    <b>Melb_angel = THGC's <i>INNOCENT</i> Angel</b> :smile:
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  11. ___________________________________________________________
    using RAID5 on your system would be a bad idea because the RAID card will eat up your CPU power for the RAID5 parity calculations
    ___________________________________________________________

    Only if the card hasn't any RAID 5 processor on board to provide for the parity calculation. The controller from Promise SX4000 does have this processor as well as on board memory and the main CPU is not charged for the parity calculations. RAID 5 is able to grant a good data reliability as it allows that one disk of the total, any of that, can fail without loosing data. The perfomances can be estimated in about 10 % lower than RAID 0.

    ______________________
    <font color=red>you don't need a faster computer, you need faster fingers for your hand</font color=red>
  12. Exactly. The highpoint 1504 doesn't have an onboard processor unlike other hardware RAID cards you mentioned such as the promise SX4000. The difference in price between such cards reflects this.

    <A HREF="http://www.anandtech.com/myanandtech.html?member=114979" target="_new">My PCs</A> :cool:
  13. OK, With the Highpoint 1504 card, RAID 5 may cause a big slowdown of the CPU.

    ______________________
    <font color=red>the new bios of my mobo let me to choose the P.rating number of my CPU.
    Now I have an XP 8000 + </font color=red>
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