Difference Between HPT Raid Cards?

Discussion in 'Mac Pro' started by TMothy, Jul 26, 2011.

  1. TMothy macrumors newbie

    Aug 25, 2010
  2. FireWire2 macrumors 6502


    Oct 12, 2008
    They are the same card
    None of these is hardware raid. It's a hardware assist (use host CPU resources and timing)

    It's base on marvel 9128, which I think pretty weird design.

    It has TWO Marvell 9128 chip set each output to 1x lanes PCI express then go to a multiplex PCI E bridge chipset and comes out as 4x lanes

    1st problem:
    Two 6Gb SATA ports tight to 1x lanes PCI E V2.0. 12Gb/s capable then you go to 5Gb lanes!
    2nd problem:
    Signal being mux at PCI E bridge create lots of latency

    What kind of the design is that? Like you put a V12 in compact car when you rep it up the darn car is disintegrate.

    It is much slower than http://www.sansdigital.com/esata-port-multiplier/ha-dat-4espcie.html
  3. TMothy thread starter macrumors newbie

    Aug 25, 2010
    What would you suggest I get?

    Like I said it would go in a Mac Pro.

    I would be connecting a Rosewill 5 bay enclosure with 5x 1.5TB's in a Raid 5.

    I was told to stick with HPT cards because they were Hardware Raid Cards. But according to what you said, that might not be a good idea.
  4. nanofrog macrumors G4

    May 6, 2008
    Generally speaking, Highpoint isn't the best company to go with, especially for true hardware RAID cards, as they don't design or manufacture anything they sell. It's all done by ODM's, and the support is lousy, even if the actual card is any good.

    However, a simple SATA controller that supports Port Multipliers will do fine for the Rosewill enclosure you mention (5 bay uses a PM chip = why you need the support).

    As per the cards linked, take a look at newegg's feedback on the 644; 67% of purchasers gave it a single egg... Doesn't generate a lot of confidence in it IMO.

    Must you have 4x eSATA ports?

    If not, there are 2 port alternatives that have a good track record in the MP's. The HPT 622 has a good track record, as does the newertech eSATA RAID version (has PM support).
  5. FireWire2 macrumors 6502


    Oct 12, 2008
    Rosewill 5 bay enclosure is a PM enclosure when use with HTP 622
    It is a fake raid (linux term) solution

    As I mention earlier HTP SATA 6GB suffers architectural problem
    12Gb input routes to 5Gb PCIe and it gets worst if you stick it to PCI express V1.0

    If you want a high performance RAID5, do like what I did
    I use hardware raid eBOX-R5 If you want more host connections then use this T5-R5-eSUF
    and use the include eSATA back to convert the TWO SATA port behind the fan of MP to eSATA ports

    I got 250MB/s transfer rate

    But if you really want to use Rosewill box cuz you already have it :)
    there get Sans digital cards 4 ports or ANY Sil-3132 raid card
  6. nanofrog macrumors G4

    May 6, 2008
    For that kind of money, you can do much better than 250MB/s (more than 2x in fact, even on redundant levels such as RAID 5). For example, an Areca ARC-1880X + Sans Digital TR8X (even includes the cables).

    Granted, the system linked would require enterprise grade disks, but it can do additional levels as well as offer a lot more throughput.

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