Safely unmounting a Raid 5 array from Mac Pro Nehalem

Forgive my ignorance but I am very green when it comes to Raid set-ups. I'm a editor and I'm in the process of setting up a RAID 5 as follows:
Highpoint RocketRaid 4322 Controller card in top PCI slot,
running mini SAS cable to,
Proavio 8 drive Enclosure with 8 1TB Samsung drives.
I've formatted the Raid array and mounted it on my desktop via DISK UTILITY. My question is when I want to turn my Raid drives off what is the procedure?
Do I unmount the Raid Array via DISK UTILITY or is there a bit more to it than that. I tried finding concise info in the Raid Controller pdf but haven't found any concrete details. I haven't experimented with unmounting it yet because I have media on the Raid drives I don't want to lose.
I'm sure it's probably a simple procedure but wanted to check with those in the know before doing anything.
thanks

Hi and Welcome to the Discussions!
That's quite a set up. I envy you.
I'm sorry I don't have an answer to your question, but I bet it's something simple to do also. Only thing I can think of for a fast and direct answer is somewhere buried here. Good Luck.
http://www.hptmac.com/US/index.htm

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However, like many people, who have the same or similar setup to myself, we experience severe delays the most basic Motion.app UI such as: selecting an item, scrubbing through the timeline, performing any kind of transform etc etc. Many of us trying to diagnose this problem (looking for any kind of diagnostics or messages etc) have noticed that with the exception of one single core, the remaining cores to do very little (idle or just barely moving) whilst the remaining single core is taking out at 100% constantly.
Many months ago whilst really bogged down with this problem trying to complete a project, I contacted Mark Spencer who politely explained that notion exploits the on-board graphics card (in my case the ATI Radeon HD 4870). After frustratingly trying to improve the performance of this and completely reinstalling Final Cut Suite in a different brand-new (at the time MacOS X 10.5.6), I found that there was little difference.
I am mentioning all this because, I know that a few colleagues have had a similar problem and have not found any satisfaction in looking at this despite many well-informed forum users who offer excellent advice.
At my wits end (currently), I took a few days to try and isolate what the problems may be caused by (what exacerbates this severely degraded performance). This user interface sludgy degradation is manifested through the UI also has the (spinning beach ball).
I isolated pieces in some of the Motion.app projects and started to ISOLATE (Control-I) what I thought were quite complex layers and individual objects but to no avail. I then resorted to completely deleting them with some improvement in performance (noticeably less sluggyness) however it still was not lightning fast as I expected considering it I was in draft mode, 720 p resolution, with lighting, shadows and reflections completely turned off in the view.
*Motion.app BEHAVIOURS*: after some hours and a great deal of trial and error (non-productive work time I might add) it occurred to me that some of the Motion.app behaviours in particular place in the layer with as few as five objects in the layer (behaviours such as "Motion.app path", "wriggle", "oscillate" and even good old trusted "throw" seem to be the culprits in this particular layer.
I will note well here at this point, but of course "camera layers" does seem to be affected at all with the basic movements such as Dolly, frame, sweep etc. I have some sets up to 4 or five cameras which seems not to bother Motion.app at all!
*OBJECT SELECTION (S):* yes this also seems to have some degrading impact on playout, scrubbing and so on. Interesting I thought.
Workarounds: here are a few things that I know that work to get around some problems of working where Motion.app is extremely SLUGGY in the user interface (UI). Perhaps someone has already noted these on a forum or posted on however I couldn't find them.
So my workflow/practice here is to do the following when I'm manipulating objects (placement, set up, applying filters, adjusting timeline, and so on):
+WORKAROUND #1+: *DISABLE the behaviours* in the layers where you are performing any object manipulation. In fact we have many objects in many layers where the topmost layer (a group of nested layers) contains any behaviours, I would suggest you disable those whilst you work on that particular layer.
It's a very simple stylus click to enable the BEHAVIOURS layers that you have been working on to see what the effect of those behaviours when you want to play them out in the player/canvas.
I have no idea why such trivial behaviours cause my very expensive Mac pro to nearly lock up whilst in Motion.app version 4 and also version 3. Anyway is definitely works on me.
+WORKAROUND #2+: *DESELECT ANY ITEM IN THE CANVAS* (in any view) when attempting to play out whilst in the canvas. Again I don't know why having one or more items (including the camera) insert would have such a drastic impact on the performance of Motion.app to play out what I think is a frivolous range, however this really works for me.
*How to measure the performance or how to monitor the performance/usage of the ATI Radeon HD 4870 graphics card from MacOS X?* I would like to know exactly what this is doing on my system when one of the CPU cores is pegged out in 100% servicing requests from Motion.app. I can't find utility (which am willing to pay for) that sees the ATI Radeon HD 4870 graphics card. One I thought would have is an application called atMonitor.app (http://www.atpurpose.com/atMonitor/) which seems to do a pretty good job on my uni body MacBook Pro and wife's Macbook Air.
It would seem that any of the utilities don't seem to see the ATI Radeon HD 4870 or if they do and they initiate commands to it that the ATI Radeon HD 4870 and doesn't respond or send any replies status information. (Beats me I'm not a technical person these days)
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W
Hong Kong

Mark, I took your advice and reinstall Final Cut Suite Version 3 (including Motion.app version 4.0.1) onto a completely different and I'm used file system including a brand-new install of MacOS X snow leopard 10.6.1, which I believe is the most recent update.
To be clear, I have all the latest Pro Applications updates as well apply to this brand-new system.
So here is the *bad new*s.
*Using exactly the same hardware configuration as I described in this theme of woe, I launched Motion.app V4 .0 .1 and opened up several of the projects that I'm having trouble with that is issued.*
Simply, the symptoms and observation I described in this thread exists with a brand-new installation.
Anyway looks like I have a backup/another instance available Final Cut Pro in case my main production image has trouble.
Once again, as I described initially in this thread, I used the two workarounds to overcome the consistent and overwhelmingly an exaggerated 20 seconds lag on average interactions with Motion.app with the success that I'd described previously.
In another thread back in September 2009, a forum poster mentioned that he felt that the camera framing behaviours were the root of this problem. And to this end he advised converting these behaviours to keyframes using the command-K ("convert to keyframes") to overcome his misery.
This indeed does work very well. So this is the third workaround and I'm starting to use.
Further I have done some more hard comparisons with my 2009 MacBook pro uni-body 2.93 GHz with a standard arrangement of 4 MB of memory and the usual disk internally. *To my great surprise*, I found that the projects that I'm having a lot of trouble with were much more responsive not only with the camera framing behaviours (which I'm not particularly having any trouble with), but the layers that contains a simple transform behaviours such as "motion path", "wiggle", and so on did not seem to bother the Mac book pro.
I watched the CPU cores on the Mac book pro maybe go to 80% while the project was loading, and also whilst I gingerly navigated through the project although feeling a little sluggy was far less in orders of 10 to 20 seconds faster than this Mac pro Nehalem with all the bells and whistles on my earnings embedded within it.
Now I'm starting to wonder, as Andy pointed out, +maybe there is some trouble with the hardware in this system+. I really could not know how to determine if this is the case. However before I draw this conclusion finally, I noticed that there are a lot more people out there with the same consideration as I have that have this same problem. It's not narrowed down to those owners with the ATI Radeon HD 4870 graphics card, however these seem to be the bulk of the people who are trying to do things that are getting a fair amount of forum time (like me).
There certainly seems to be something of an issue as there are some symptom dumps for Motion.app but only one or 2 to over this period that seemed to be triggered by something on this machine. And like many on this forum I gave up reading dumps for a living back in the 1990s.
I would really like to know how I can diagnose this problem before I had to pack this Mac pro up and carted back to the local Apple care centre here in Hong Kong (which means I won't have it forever while, which means no income). Yes I can use my Mac book pro uni-body which is I might end up doing.
_Oh, and this little gem._ I find that if I invoke the "timeline pane/window" (command-7), that it can take up to 2 seconds to refresh the screen. It is amazingly slow and feel like there is definitely something wrong.
If I have a simple motion project by that I mean some simple plates some moving text and no real 3-D except for one little camera Motion.app V 4 seems to work quite okay.
The sets that I'm working in at about eight or nine cameras over the timeline and maybe three or four sets in the project. This is not the work I think especially when most of the moving here is a few objects wobbling around in 3-D space and quick camera moves using the camera framing behaviour.
In summary, having spent what seems to be 40 or 50 hours messing with this issue are not doing anything productive, I've come to the conclusion that there is definitely something wrong with this setup that I have. However having had no problem with that up until now (I know actually I had some problems back in May 2009 with it but it seemed that install a Final Cut Suite version 2 completely fixed it.
And I am totally surprised that my Mac book pro uni-body if pressed can do the job that I want.
Therefore Motion Forum users, I really don't know what else there is to do other than to poke around over time and eventually something will fix this because it is really very frustrating and like many of us on this forum I did endeavour to pay for/put capital funds into a system highly recommended by many that uses Apple production applications than I expected it would work.
By the way, I noticed when I use Nuke version 5 and Shake V 4.1 and even Maya PE, I don't have these issues but will concede that I doubt whether the use applications take advantage directly of the GPU arrangement in the graphics card like Motion.app does.
That's all I have.
Any other thoughts are most welcome.
W

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