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Which Hitachi Disks ?

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Simon Blackledge
Which Hitachi Disks ?
on May 29, 2014 at 10:07:06 am

So confused which to go for ? Bob ?

To be used with Arcea as discussed. ARC-1883x 12Gig one.

Hitachi-HGST
Ultrastar 7K4000
HUS724040ALE640 0F14683
SATA 6Gb/s

OR

Hitachi-HGST
Ultrastar 7K4000 512n
HUS724040ALA640 0F14688
SATA 6Gb/s

Will be in a Netstor connected to a 2008 MacPro

Cheers

Si


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Bob Zelin
Re: Which Hitachi Disks ?
on May 30, 2014 at 12:26:52 am

I have no idea. I treat this as commodity (practically) -
HGST Ultrastar - whatever number comes up. Get the iX, not the X for the Netstor.

Bob Zelin

Bob Zelin
Rescue 1, Inc.
maxavid@cfl.rr.com


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Simon Blackledge
Re: Which Hitachi Disks ?
on May 30, 2014 at 8:25:35 am

That's 3 internal and 1 external though ? :/

The diff is 512 bytes or 4k sectors

4k has 512 emulation.

Areca can handle both fine apparently.

Cheers

S


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Bob Zelin
Re: Which Hitachi Disks ?
on May 30, 2014 at 6:07:04 pm

arc-1883ix-16 is what you want. Go to the Areca website, and look at the spec sheet, you will see everything.

Bob Zelin

Bob Zelin
Rescue 1, Inc.
maxavid@cfl.rr.com


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Simon Blackledge
Re: Which Hitachi Disks ?
on Jun 4, 2014 at 6:09:27 pm

Thats internal ports.. for the Mac Pro I need 2x externals no ?


s



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Bob Zelin
Re: Which Hitachi Disks ?
on Jun 5, 2014 at 12:09:38 pm

Boy Simon, I am confused -
the new cylinder Mac Pro has no slots. You take the Tnunderbolt port and go into the Netstor, and INSIDE the Netstor is where you put the ix card - so the 16 drives connect to the internal connectors. The ix has one external port for SAS expansion.
If it only had external ports, how would you get it to work with the Netstor and the new cylinder Mac Pro ?

bob Zelin

Bob Zelin
Rescue 1, Inc.
maxavid@cfl.rr.com


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Simon Blackledge
Re: Which Hitachi Disks ?
on Jun 5, 2014 at 12:15:24 pm

I'll be using the 2008 Mac Pro for now with the external SAS netstor's we have.

Hence externals.

s



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Steve Modica
Re: Which Hitachi Disks ?
on Jun 8, 2014 at 11:57:34 am

Advanced Format (4K sectors) is what you want. It's better if you can use it. Not all cards support it, which is why the drives support 512 byte emulation. You don't want to be using that since it'll be worse than native 512bytes. So long as the card claims to support advanced format, you're good.

Steve Modica
CTO, Small Tree Communications


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