RAID PCI Necessary (and another question)

Good Morning,
I just ordered an XServe with 3x80GB drives. I did not order the RAID PCI card.
Is the RAID PCI card necessary if I want to Mirror the boot drive to one of the other 2 drives in the Xserve?.
Also, If I were to setup up the 3 drives as RAID 5 configuration, how much usable drive space should I expect to have available?
(I also ordered an Xserve RAID with 4x500 GB drives. I will have 2 sets of mirrored drives from that for data storage)
Thanks very much

>Is the RAID PCI card necessary if I want to Mirror the boot drive to one of the other 2 drives in the Xserve?.
Necessary? no.
Mac OS X can handle RAID 0 (striping) and RAID 1 (Mirroring) out of the box.
The Hardware RAID card can do RAID 0, RAID 1 and RAID 5, so you only need the card if you want RAID 5.
Note that the card can also do RAID 0 and RAID 1 and should be faster since it offloads the work from the main CPU, but it isn't necessary.
>Also, If I were to setup up the 3 drives as RAID 5 configuration, how much usable drive space should I expect to have available?
The general rule is that RAID 5 uses one drive for parity, so for a RAID 5 array with n drives you end up with a capacity of ((n-1) * drive size).
So in this case, with three 80GB drives you get (3 -1) * 80, or about 160GB of usable space.
>(I also ordered an Xserve RAID with 4x500 GB drives. I will have 2 sets of mirrored drives from that for data storage)
That's not the optimal use of 4 drives in the XServe RAID.
With two sets of mirrors drives I assume you're intending to create two 500GB mirrored volumes which results in 1TB of usable space.
Compare that with a four-drive RAID 5 set which yields 1.5TB of usable space. You get 50% more volume that's still RAID protected against a drive failure.
OK, you might tolerate two drive failures in the mirrored scenario, but you'll have to decide whether that minor advantage outweighs the additional space.

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Richard Mackenzie wrote:
I upgraded my PowerBook G4 (1.67GHz and 2 GB DDR2 SDRAM) from Tiger to Leopard 10.5.6. I did so largely to get Time Machine. And then I ran into all sorts of woes doing my back-ups. So I took another step and replaced my external 2TB Lacie drive (that I was using for Time Machine) with a 500 GB Time Capsule. It arrived today and is right now in the middle of its first back-up. We shall see how well it fares with Time Machine. I am crossing my fingers. Does anyone see anything right or wrong I did in this exercise?
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And another question on video

While I'm here, I have another itunes problem. I bought a daily pass to the Daily Show. It's great, except the quality of the video is TERRIBLE!!! There is a tremendous lag between what I see and what I hear and it looks pretty pixelated. This happens on most of the episodes. I have downloaded many other programs from itunes and did not have this problem. Any ideas?
Thanks again.

While I'm here, I have another itunes problem. I
bought a daily pass to the Daily Show. It's great,
except the quality of the video is TERRIBLE There
is a tremendous lag between what I see and what I
hear and it looks pretty pixelated. This happens on
most of the episodes. I have downloaded many other
programs from itunes and did not have this problem.
Any ideas?
Thanks again.
I am not familiar with the daily pass, but is this video streamed or do you actually download the entire files? The videos you download from iTunes are specifically made for the iPod so they have a 320x240 resolution which would look pretty bad fullscreen on a computer.
Hope that answers your question.

Why is it when I download music to my iTunes an explanation mark comes up on some of my music. And another question when I move some music to my iPod I can not play it because this little circle comes up

Why is it when I am downloading my CD's to my computer some of my music gets an explanation mark next to it.
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When I can download music to my iPod some of the music downloads but I can not play it because it has this little round circle in front of it ansd the music is greyed out and not black lettering like the other songs I can play.
Please help

katenater wrote:
Thank you now how do I get the songs on to the flash drive?
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If you normally run iTunes in full-screen mode, make it smaller so that you can do the drag.
Then insert the flash drive into your computer. Find your Automatically Add to iTunes folder (it is inside the iTunes media folder) and drag the songs into it.

Upgrading Itunes with an external hard drive and another question

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Sincerely,
Gusaphit

gusaphit wrote:
so because you have kept your itunes folder and library on an EHD, I take it you have also deleted the actual Itunes program folder from your computer's C drive?
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I don't think you want to move the iTunes.exe file to your EHD. As I understand it, iTunes isn't really happy there and it takes some work to get it there. Just move the library.
I'm asking because you responded and you're cute.
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Strange intermittent internet disconnect-reconnect... and another question.

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mondan wrote:
> Warning: Cannot modify header information - headers
already sent in
> C:\wamp\www\toursite\admin\users\add.php on line 56
> and on line 56 is:
> header(sprintf("Location: %s", $insertGoTo));
> Can anyone help me here?
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> Im using a server package called WAMP and pages that I
can run will
> sometimes cause and error box to popup saying that
Apache has caused error, the
> box that gives you the option of sending the report or
not.
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David Powers
Author, "Foundation PHP for Dreamweaver 8" (friends of ED)
Author, "Foundation PHP 5 for Flash" (friends of ED)
http://foundationphp.com/

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Does anyone know whether, or when, Aperture will support the Leica Monochrom camera. Seems odd that it doesn't do so.
No one here know, only Apple does and they don;t announce in advanced. There have been other disscusions asking this, check the More Like This box on the right hand side of the page for other threads.
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regards

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Hi
When you create a class for example plane, you can create two subclasses for example engine plane and propeller plane. Inheritance is used not to have to re-write all the set get methods in the plane class correct?
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Hi
When you create a class for example plane, you can
create two subclasses for example engine plane and
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correct?No, that's not why inheritance is used. It's a nice
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Hi All, So, I have a couple questions before ordering an upgraded box: 1. As the title suggests, do I lose what's on my current DVR if I upgrade? Or is there was way to transfer the recordings to the new box so i don't need to lose anything or wait until some time when i have little or nothing to lose? 2. I can't seem to find specifically what the 7232 has that the 7216 doesn't. Is there page listing what exactly is different other than just "newer is better"? If not, can someone tell me how the HD sizes compare? Thanks!
Solved!
Go to Solution.

1 - All content (recordings) on the old DVR (as well as favorites and all settings) can't be transferred.
2 - the 7232 has a faster processor, more internal memory (RAM), and a 500G hard drive instead of the 160G that your 7216 has.
If a forum member gives an answer you like, give them the Kudos they deserve. If a member gives you the answer to your question, mark the answer as Accepted Solution so others can see the solution to the problem.

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I think it would be a little bit of a skewed judgement of how widespread any particular problem is based on the responses on this board. You have to keep in mind that most people come here in the first place because of a problem they are experiencing. So it's likely that the ratio on here would be extremely high. The people that post on here only represent a small number (ratio wise) of ipod users world wide so over all the problems described on here may not be as widespread as it may appear (also keep in mind that other sites where complaints are logged would have the same issue...and it's very likely that a number of the complaints here are reposted on various sites by the same people). On here, I am one of the few people that has not experienced the majority of the issues that others have posted about. I have not had to reset my ipod or do a restore or go through any of the 5 R's. On here I feel like I may be on of the lucky minority but the people around me represent a different picture. No problems with their units with the exception of the on-the-go playlists bug and the initial firmware bugs everyone experienced.
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RAID PCI Necessary (and another question)

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