Mac Pro :: Raid Speed ... Raid 5 Vs Straight Sata HDs
Jan 28, 2008
ive put 4 of the hitachi 1tbs in my new mac pro.. and i really want to do Raid on them eventually.. and buy the pricey apple raid card.. i'll do it.. but speed wise:
How fast is a Sata connection straight from HD>Motherboard... ~75mb/s?
Is the Raid 5 config with all those drives much faster... around ~110mb/s?
Do you know if there is anyway to get a 5th drive into the raid 5 array? using the ODD space.. or some externals too... i need as much as space as possible...
And boot camp wont work with raid card anymore? I was thinking to have the startup disc be a raptor to increase speed on the apps, how would it integrate with the raid card, etc
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Jan 18, 2009
The time has come to move to a RAID setup in my Mac Pro. Ideally I'd like to run 4 1.5TB SATA drives in a RAID 5 or 10. It seems there are a LOT of threads on this topic all filled with different information, so I have a few questions...
Which RAID cards are bootable?
Do any work like the Apple card and interface with the drives through the logic board?
If not, how do you connect the internal drives to the RAID card in their stock bay locations?
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Apr 28, 2008
I am using the first generation Mac Pro, and I wanted to ask some questions related to SATA HDD and The Raid configuration. I currently have 4 HDDs in the internal bay and 2 external in the enclosure using the USB2 connection. The performance is not that great, and I am sick of adding more HDDs through USB2 which offers really slow performance. I was thinking of building a dedicated NFS File Server using Linux, but before I did that, I wanted to ask if there are solutions out there within Apple Mac Pro without going through this route.
I currently have 6 and probably need to buy 3 more in very short time period. also, all of my HDDs are 750g. Simply put, I am wondering if there are like 16 or 24 port SATA Raid Controller that I can buy for MacPro. Since the MacPro can't house all of them inside, I need to use external enclosures for some of these HDDs, connected through eSATA or whatever means possible without jeopardizing the performance. I am also interested in Raid 5 setup, so, that support in raid card is mandatory.
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Aug 21, 2008
My SATA RAID card is conflicting with my 6800 GT Graphics card in my 2002 Quicksilver.
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Feb 21, 2008
Can anyone recommend a SATA RAID card for a G5? I'm looking for a hardware solution as opposed to using a software RAID controller.
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May 16, 2007
I have a PowerMac G5 and need to purchase an internal RAID card to create a RAID 1 mirror of the system drive... one that will allow me create a Hardware RAID 1 mirror, not software RAID through OS X.
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Dec 2, 2009
I just bought a Guardian Maximus RAID1 kit and I have two 1TB drives in it. I'm using it over Airport Extreme as an airdisk (mac osx 10.6.2)
My question is simply: am I running a risk by partitioning it into two partitions? Should I ever have to rebuild the failed disk (which I understand is really simple with the Guardian Maximus) - will it have trouble doing two partitions? I'm using one 500gb partition for time machine and one 500gb partition as redundant itunes/media.
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Jan 28, 2009
I have a Lacie ext hard drive with 2 x 250gb HD that were one RAIDed into a single 500gb HD. I ran this update Lacie firmware update: http://www.lacie.com/support/drivers...r.htm?id=10053 And now my HD will only show up as two separate HDs of 250gb instead of a single RAID HD of 500gb.
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May 1, 2008
I have a macpro with 4 x 1tb drives
Is it possible to get a highpoint raid controller and put those 4 drives in a raid 5 array (and then create partitions inside that array) - or do you need to have 1 drive by itself for the operating system, and then create a raid array using the remaining 3 drives?
Lastly, are the highpoint 3500 series a decent card? and fully compatible?
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May 20, 2009
I have a new Mac Pro Quad 2.93 with the Mac RAID card installed with four 1TB drives setup in a RAID 5 array. When creating the volumes in the RAID utility, you can not edit them, resize, etc. If one large volume is created in the RAID utility, you can then partition that one volume using the Apple Disk Utility, which then allows you to resize if needed.
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Sep 13, 2009
I'm using the software RAID right now. Everything is set as RAID 10. I want to move to a RAID card� if I keep it as RAID 10 will I still need to redo everything?
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May 30, 2008
have a speed comparison between a RAID 0, 1, 5, and possibly a 01 on the new Mac Pro. I found a few reviews from other manufacturers, but I was interested in how read / write speeds for the Mac Pro and the Apple RAID card stack up. I'm particularly interested in how much slower a RAID 5 is then a RAID 0.
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Aug 3, 2009
I got my Intel Gen2 SSD's over the weekend, and have installed them in Raid 0 using icy dock converters, I cloned my OS onto there from my caviar black raid 0, so I want to run some sort of throughput test to compare the two, not application specific as I don't do any of the CS4, video stuff, just plain old read and write tests
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Nov 16, 2009
I have a RAID 0 set up with two 1.5TB HDs. I am doing some reorganizing and want to take all the data on the RAID 0 and move it to one of the hard drives in the RAID 0 and create to single drives. Is there any way of moving all the data from a RAID 0 onto one of the HDs?
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Apr 20, 2010
I am planning on getting a 2010 MP when they come and have a question about it. I am 90% sure that with my budget, I will not be able to after a RAID card. I am wondering if software RAID would be alright or if it's so bad it's not worth doing. Also, there is small chance that I could buy a RAID card later on, how would I install it? I will be using it for 3D animation with Maya and some zbrush modeling. Also I will be doing some Photoshop and illustrator and maybe some gaming on win 7 boot camp. Feel free to list any other pros and cons about either a software RAID or hardware RAID, I wana make sure I have all the details before making a final decision on it.
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Mar 21, 2010
have MROOGLED and searched forums but haven't found a quick and dirty answer to this...
What's the best bang-for-buck upgrade of these?
1) Software Raid 0 ?
(Free, but might actually slow some tasks due to adding a workload to the processor?)
2) Add RAM ?
($150 to bump from 3GB DDR3 to 6GB, $300 to bump to 10 GB)
3) Hardware RAID 0 ?
($800 for the apple controller - yikes! )
I read Lloyd Chambers recs for optimizing photoshop, and while very helpful, it seems overkill for a weekend warrior , non professional like me.
Using the base 2009 Mac Pro with standard 3GB of DDR3 primarily for
1) medium photoshopping with file sizes up to 200 - 400 MB
2) importing / smoothing / editing movies in iMovie and possibly FCE from HDV tapes and a Flip
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Mar 18, 2009
I'm quite new to the OS (Level) Raid concept provided by the Disk Utility within Leopard OS X 10.5.6 and other OS X OS's, but I saw a great video showing 2 USB External HD's hooked up to a macbook running a raid to tie them together (striped or mirrored). This concept is simple! But heres my situation:I have an iMac 22" 2.4 GHz Intel Core 2 Duo, 4 GB 667 MHz DDR2 SDRAM, Running off of a "298.1 GB WDC WD3200AAJS-40VWA0 Media Hard Drive". I also have an External Drive "465.8 GB WD 5000AAV External Media".
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May 15, 2009
I have never setup RAID before and this question may be totally stupid for that matter.
Can I setup RAID 1 (or call it mirroring) without the RAID card? I have two 1TB internal drives in my Mac Pro and I want to mirror them. I don't want to spend another 700 bucks just to setup a mirror.
Disk Utility shows some RAID options, but I am not sure how to use them, or if they will work at all without the RAID card.
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Feb 14, 2010
On my 2009 Mac Pro, OS X's disk utility seems to allow the provision of making a mirror RAID or a stripe RAID.
Is it possible to shove in 2 drives, make a RAID 0 for two of them, and then add in 2 more drives to make a RAID 1 out of that RAID 0? (a RAID 0+1?)
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Aug 19, 2010
Will the speed be comparable between a RAID setup that uses 2 x 1TB 64MB cache Blacks, vs 1 SSD (Intel X25-M for example)? Will the difference be noticeable at all (during application launches etc). I would like to know soon because I just ordered the 2 Blacks
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Dec 12, 2010
I have a silly RAID question, and I can't seem to find an answer via the search.
I have 4 disks that I want to put in a striped raid. One of those disks (disk 1) has data that I'd like to keep.
If I put these 4 disks in the striped raid will I lose the data that is on disk 1?
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Aug 5, 2008
Currently I have a stock 320G drive installed with a 750G F1 Spinpoint installed as a Time Machine. I have maxed the 320 out so I'm looking to get a bigger drive.
Question: looking at the F1 Spinpoints, should I do 1x750 with 32M cache? Or 2x400G in a software RAID0? The 400s have a 16 Meg cache, so 32M total.
What's better? Do you think I'll see a better performance boost by striping over 2 drives with 16M cache each, or sticking with 1 drive with a 32M cache? And with the 2x400, I'll gain about 50 Gigs of storage over the 750G drive.
2x400 is $156
1x750 is $125
Is this a decent boost for only an additional $25, or should I just save a drive bay and get 1 drive?
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Oct 19, 2007
My Mac is beginning to run low on free HDD space. I'd like to add a second internal HDD to boost space. However, I don't like having a completely separate HDD icons because I can never remember which files are on which disk, not to mention a lot of copying between the two.
I'm considering adding a second HDD and combining the two into a RAID setup. Do I have to reformat my existing disk, or can I just add the second HDD's storage onto my existing disk with Disk Utility?
If I can just pop in a second HDD and add its capacity to the existing one's, that'd be ideal. Having to clear off the existing disk before joining the two would be a chore, though.
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Sep 25, 2010
I have a RAID 0 set up on my 2009 MP. I am using two 2TB Caviar Blacks and have my boot drive on a OCZ 120GB Vertex. I have 50GB of iTune music on that drive and want to move it to the RAID 0.
Is it as simple as using the preferences on iTunes and choosing the 'Data' volume (name of my RAID 0) and assigning iTunes to that drive? Is this the guide I need to follow?http://macperformanceguide.com/Setti...ing-iApps.html
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Oct 8, 2010
Okay, so... To make a raid 60, you make a raid 6 first then stripe that. If you started with a 4 disk raid 6 array and increased your number of disks to 8 when you stripe it, I have no trouble visualizing performance and capacity advantages.
However, I'm having trouble visualizing trade offs, speed or capacity differnces if you compared a 8 drive raid 6 vs an 8 drive raid 60.
If you are not Nanofrog, but you did stay at a holiday inn last night, you are welcome to reply as well.
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Dec 17, 2010
LSI 9240-8i SAS RAID for BootCamp only. Will it be bootable for BootCamp? Anyone using that card? I need to connect 4 SSD drives to work with my Mac Pro for Windows 7 Ultimate 64-bit.
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Feb 24, 2008
Ive heard conflicing statments that the raid is software/hardware. anyone know for sure what it is (Im not talking about that card you can buy).
If it is software raid does this take a toll on the processors? is it serious or does it not matter at all.
IF it does matter. should I buy a exteran raid card? is there a mac compatible one. I just need basic raid0.
I just bought 2 samsung spinpoint F1 750s in anticipation of my new mac. But just want to make sure that raid is a wise decision.
for those who are thinking about replying about the dangers of raid. I know. I have time machine. if the raid goes down then so be it. such is life. I will have backups.
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Nov 8, 2009
OK I do some Video Editing and Motion Graphics with FCP and Adobe After Effects.
I have a Mac Pro 2009 with 4 1TB Drives and 2 1TB Lacie Fire Wire 800 Drives.
This is the setup i have
1st Drive Mac OSX
2nd Drive is Windows 7 OS
3rd & 4th Striped and Mirrored to the 2 Lacies External Drives that are Striped. (raid 1 + 0)
My first question: is this a bad system? should i set it up a different way?
Second: is If a Drive goes out in the Raid 1+0 how will i know and how can i put a new drive in to fix it? How does this work?
Third: I set the RAID up with disk utility, is this ok, bad or good?
Fourth: IF the the OS Drive goes out will and i replace it and format it, will the RAID 1+0 Still be there? some where i read that its OS dependant?
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Feb 19, 2010
I've never set up a RAID before. I'm about to purchase an 09 MP through Apple and was looking at the Apple and CalDigit RAID cards before I started reading these forums. If the experts are saying that the Areca ARC-1212 works better than both of those at half the price, I'm sold.
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Oct 7, 2010
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well it is a newer piece of gear came out in 2010. uses a different raid engine. The JMB393 CHIPSET. IT IS SMALL low cost. I may buy it and test it out. uses 2.5 inch drives. 5 wd scorpio blacks run about 300 bucks and this is 130. if you get fast read /write over 200mb/s it may be a good piece of gear for some.
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