4213 Views 7 Replies Latest reply: May 12, 2009 11:59 AM by mbean
Yes I'm aware of that. I know the apple raid tops out at 320, so I'm looking into Highpoint cards also. I expect this system to have lots of non-sequential read/writes, so RW trans/sec is more important to me than raw, sequential pipe speed. Don't know how the apple card stacks up in that respect. What you think?
I'd really like to stay with an internal setup if I can - ease of forklifting is the main benefit. That said, I'm willing to go with an external box if I can't get the speed and capacity I need onboard (I need to net out at LEAST 1.2TB). Thoughts?
mbean would have more to say on best configuration
have you browsed the AMUG reviews?
One thread on SATA controllers
Areca ARC-1680ix-12 SAS RAID Controller
Enhance RS16 JS 16-bay SAS Expander Enclosure
... not without a controller.
Maybe you are better off with something that has native support for SAS?
Did you ask us the right questions? seems like if you said what you wanted and had looked at (and rejected) it would help.
— up to 553MB/s of sequential read performance in *RAID 0*. Ideal for video and creative professionals with demanding storage needs, as well as for use as a workgroup server, the new hardware RAID option supports RAID levels 0, 1, 5, 0+1, and Enhanced JBOD. It has 512MB of cache and an integrated 72-hour battery for protecting the RAID cache. The card occupies the top PCI Express slot (slot 4) and connects to the four internal drive bays.
With the Mac Pro RAID Card installed, high-performance 15,000-rpm SAS drives may be used. SAS drives are sold separately and available with the Promise 450GB SAS Drive for Mac Pro.
"Can the built-in backplane on a 2009 Mac Pro physically accept a SAS drive with a SFF 8482 connector?"
The new March 2009 Mac Pro models no longer provides a method to connect 3rd party internal SAS controllers to the Apple internal backplane. While the Apple Mac Pro backplane connector is SAS compatible the motherboard controller only supports SATA.
Apple sells a 4-port PCIe RAID card that adds SAS compatibility. It uses the connectors in PCIe slot 4 bus to automatically make the connection. So far, this change has caused all of the 3rd party internal SAS controllers to no longer be able to connect with the internal Apple Mac Pro backplane.
If you are determined to only consider an internal SAS solution, the Apple RAID card is your only choice. Personally, I prefer an external solution that allows easier access to the hard disks and provides hot swap capability.
You may want to read about the HighPoint RR4322 if you are interested in a faster external option.