10.6.2 upgrade killed software RAID 0 for my Mac Pro - can it be recovered?

I have 4 internal SATA drives in my Mac Pro, one is the boot device, one is the time machine device, the remaining two drives are set up as striped disks (RAID0).
When upgrading from 10.6.1 to 10.6.2, my RAID set was killed by the upgrade process.
I now have very strange output in disk utility, I can see:
1. 750 GB (disk icon) with one volume called "RAID Slice for "RAID""
2. My Time Machine disk (750 GB)
3. My startup disk (750 GB)
Selecting disk "1.", I get the tabs Erase and RAID, selecting RAID shows strange things, see screenshot:
http://files.me.com/joj/fk64zx
(the password is "x", could not get it to work without a password).
Of course, my latest Aperture library was located there which is a bit painful.....
Any ideas?
Joakim

You have to enter the password "x" twice as well... Something strange with mobileme there.

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I have some questions regarding setting up a software RAID 0 on a Mac Pro

I have some questions regarding setting up a software RAID 0 on a Mac pro (early 2009).
These questions might seem stupid to many of you, but, as my last, in fact my one and only, computer before the Mac Pro was a IICX/4/80 running System 7.5, I am a complete novice regarding this particular matter.
A few days ago I installed a WD3000HLFS VelociRaptor 300GB in bay 1, and moved the original 640GB HD to bay 2. I now have 2 bootable internal drives, and currently I am using the VR300 as my startup disk. Instead of cloning from the original drive, I have reinstalled the Mac OS, and all my applications & software onto the VR300. Everything is backed up onto a WD SE II 2TB external drive, using Time Machine. The original 640GB has an eDrive partition, which was created some time ago using TechTool Pro 5.
The system will be used primarily for photo editing, digital imaging, and to produce colour prints up to A2 size. Some of the image files, from scanned imports of film negatives & transparencies, will be 40MB or larger. Next year I hope to buy a high resolution full frame digital SLR, which will also generate large files.
Currently I am using Apple's bundled iPhoto, Aperture 2, Photoshop Elements 8, Silverfast Ai, ColorMunki Photo, EZcolor and other applications/software. I will also be using Photoshop CS5, when it becomes available, and I will probably change over to Lightroom 3, which is currently in Beta, because I have had problems with Aperture, which, until recent upgrades (HD, RAM & graphics card) to my system, would not even load images for print. All I had was a blank preview page, and a constant, frozen "loading" message - the symbol underneath remained static, instead of revolving!
It is now possible to print images from within Aperture 2, but I am not happy with the colour fidelity, whereas it is possible to produce excellent, natural colour prints using its "minnow" sibling, iPhoto!
My intention is to buy another 3 VR300s to form a 4 drive Raid 0 array for optimum performance, and to store the original 640GB drive as an emergency bootable back-up. I would have ordered the additional VR300s already, but for the fact that there appears to have been a run on them, and currently they are out of stock at all, but the more expensive, UK resellers.
I should be most grateful to receive advice regarding the following questions:
QUESTION 1:
I have had a look at the RAID setting up facility in Disk Utility and it states: "To create a RAID set, drag disks or partitions into the list below".
If I install another 3 VR300s, can I drag all 4 of them into the "list below" box, without any risk of losing everything I have already installed on the existing VR300?
Or would I have to reinstall the OS, applications and software again?
I mention this, because one of the applications, Personal accountz, has a label on its CD wallet stating that the Licence Key can only be used once, and I have already used it when I installed it on the existing VR300.
QUESTION 2:
I understand that the failure of just one drive will result in all the data in a Raid 0 array being lost.
Does this mean that I would not be able to boot up from the 4 drive array in that scenario?
Even so, it would be worth the risk to gain the optimum performance provide by Raid 0 over the other RAID setup options, and, in addition to the SE II, I will probably back up all my image files onto a portable drive as an additional precaution.
QUESTION 3:
Is it possible to create an eDrive partition, using TechTool Pro 5, on the VR300 in bay !?
Or would this not be of any use anyway, in the event of a single drive failure?
QUESTION 4:
Would there be a significant increase in performance using a 4 x VR300 drive RAID 0 array, compared to only 2 or 3 drives?
QUESTION 5:
If I used a 3 x VR300 RAID 0 array, and installed either a cloned VR300 or the original 640GB HD in bay 4, and I left the Startup Disk in System Preferences unlocked, would the system boot up automatically from the 4th. drive in the event of a single drive failure in the 3 drive RAID 0 array which had been selected for startup?
Apologies if these seem stupid questions, but I am trying to determine the best option without foregoing optimum performance.

Well said.
Steps to set up RAID
Setting up a RAID array in Mac OS X is part of the installation process. This procedure assumes that you have already installed Mac OS 10.1 and the hard drive subsystem (two hard drives and a PCI controller card, for example) that RAID will be implemented on. Follow these steps:
1. Open Disk Utility (/Applications/Utilities).
2. When the disks appear in the pane on the left, select the disks you wish to be in the array and drag them to the disk panel.
3. Choose Stripe or Mirror from the RAID Scheme pop-up menu.
4. Name the RAID set.
5. Choose a volume format. The size of the array will be automatically determined based on what you selected.
6. Click Create.
Recovering from a hard drive failure on a mirrored array
1. Open Disk Utility in (/Applications/Utilities).
2. Click the RAID tab. If an issue has occurred, a dialog box will appear that describes it.
3. If an issue with the disk is indicated, click Rebuild.
4. If Rebuild does not work, shut down the computer and replace the damaged hard disk.
5. Repeat steps 1 and 2.
6. Drag the icon of the new disk on top of that of the removed disk.
7. Click Rebuild.
http://support.apple.com/kb/HT2559
Drive A + B = VOLUME ONE
Drive C + D = VOLUME TWO
What you put on those volumes is of course up to you and easy to do.
A system really only needs to be backed up "as needed" like before you add or update or install anything.
/Users can be backed up hourly, daily, weekly schedule
Media files as needed.
Things that hurt performance:
Page outs
Spotlight - disable this for boot drive and 'scratch'
SCRATCH: Temporary space; erased between projects and steps.
http://en.wikipedia.org/wiki/StandardRAIDlevels
(normally I'd link to Wikipedia but I can't load right now)
Disk drives are the slowest component, so tackling that has always made sense. Easy way to make a difference. More RAM only if it will be of value and used. Same with more/faster processors, or graphic card.
To help understand and configure your 2009 Nehalem Mac Pro:
http://arstechnica.com/apple/reviews/2009/04/266ghz-8-core-mac-pro-review.ars/1
http://macperformanceguide.com/
http://www.macgurus.com/guides/storageaccelguide.php
http://www.macintouch.com/readerreports/harddrives/index.html
http://macperformanceguide.com/OptimizingPhotoshop-Configuration.html
http://kb2.adobe.com/cps/404/kb404440.html

RAID setup for a Mac Pro

I'm trying to figure out what would be the best configuration for my Mac Pro tower as far as storage and backup is concerned. I want a RAID drive with hot swappable slots but I'm not sure what the best solution is. Apple's SAN and xServe seem far too sophisticated for my needs (not to mention pricey). I bought a Norco DS-500B eSATA RAID storage array but the RAID controller card is a PCI-X and incompatible with my machine (although the documentation says it's totally compatible...weird). And so in my investigation as to what card to get to replace the one provided, I couldn't find any reviews on this product, save one which said that the array is very bad and will destroy all your hard drives. Sooo...I'm returning the array in search of a new one, but again my investigation has turned up very little. Am I the only one? Or am I out of touch with the real solution?

What's missing in your post is two of the most important elements.
How much storage do you need?
There is a myriad of options if you want 2-5TB of space. Not so many if you want 2-5 petabytes of space
How much are you prepared to spend?
You have many, many options at $100,000, but no so many at $100
The other thing to consider is that by and large, price reflects quality - either in reliability or performance (or both).
If your budget is, say, $2000 you have to decide whether you're better off buying a budget 5TB system or a pro 2TB system - the latter system clearly has less capacity but may offer higher performance and/or reliability. Any RAID system is only as good as all the parts, and the physical drives are only a small element there. The controller, internal electronics, cabling and even interface can have just as much impact on a reliable RAID system (almost any RAID system can recover from a failed disk, but a burned-out controller is harder to recover from).

Software Raid Inconsistent on a mac pro

My software raid 0 array is sometimes slow, sometimes fast. Using the Blackmagic disk speed test utility, it sometimes gets 97MB/s read speed, and sometimes 150MB/s read speed. I ensure nothing else is running in the background between tests. Another test I do is to duplicate a folder containing 1 gig of files. Sometimes it takes twice as long to duplicate it. Early 2008 Mac Pro, 8 cores, 8 gig mem, raid 0 is two 750gig Caviars (using the 4th internal bay for time machine) Disk utility reports all is clean. Lion 10.7.1. Rebuild array? ideas?

Mac OS X runs with main memory massively over-committed. Because of this, it often has to return to the Boot Drive to get a few pages of this or that. This activity moves the read/write heads ways from the data area on the data drive and kills RAID performance.
If you have not done so already, you should consider creating a separate Boot Drive containing System, Library, Applications, and the hidden unix files including Paging/Swap. Move all User files off that drive, except one Admin User used only for Administration, not daily work.

Set up RAID 0 on new Mac Pro

I should have the machine by Friday, Nov 2. Two 500g drives. Apparently, Apple won't be configuring the RAID 0 (mirroring) for me. Are there instructions online that I can read now so I know what I'm getting into before hand?
Also, in the event of a drive failure, should the system just keep on chugging along, just giving me a message that one drive has failed? On my Windows system, that's what is supposed to happen. But having had two failures over the years, I only got the friendly helpful message once. The other time, the entire system shut down, even though only one drive failed. What should I expect with the Mac Pro?
Thanks!

Thanks to both. And thanks for pointing out my error. It's mirroring that's important to me, not the added speed from striping. I'm hoping that a drive failure won't cause the machine to stop "dead in its tracks", as I've had happen before, even on a high end Windows machine with RAID 1 enabled via an Adaptec RAID card.
What still isn't clear to me is whether with Apple's RAID 1 the system will continue functioning if one drive fails, or if instead I'll have some work to do to get back up and running.
The reason for my question is that too many times in the past I've bought into something that turns out not to be quite what I expected. And since Apple sells a separate RAID card for the Mac Pro, I'm wondering if the built in RAID function, without the add-on $1,000 card, will allow the system to keep working when one drive fails in a mirrored setup.
Thanks!

I have purchased a new mac book pro and I'm trying to install CS6 from old mac. I have installed cs6 upgrade but, software is asking for cs4 number which is not being accepted.

I have purchased a new mac book pro and I'm trying to install CS6 from old mac. I have installed cs6 upgrade but, software is asking for cs4 number which is not being accepted.

I should add that it's an HP photosmart 4280.I found it online and it shows the Mac 0SX operating system.

Looking for a Hard Drive RAID System for 17" MacBook Pro, any Suggestions?

I purchased my 17" MacBook Pro in Nov. 09 and it does have an ExpressCard/34 slot. What I am looking to do, is purchase a 4TB Caldigit VR External Hard Drive and put it on RAID 0. I Love the performance fact, but I don't feel too safe, because if that drives go down, there goes my data. So what I want to do is use Carbon Copy Cloner and find another External Hard Drive that will backup my Caldigit VR, since it will be RAID 0. Any Suggestions would help out very much! I am using this RAID System to store my HD Video using Final Cut Pro Studio. I know I can set up the Caldigit VR as a RAID 1, but I would rather set it up as a RAID 0 and have another hard drive back the data up. Let me know if you have set up a RAID System for your MacBook Pro and what you did. Also what express cards do you recommend?
Thank you,
Chad

There is a difference technically between this iStorage unit and the Cal Digit stuff. Cal Digit includes a hardware raid controller, and removable drives. The iStorage Pro unit relies on your computer's CPU to control the raid... so will tax things like render times... plus just to play a software raid can take as much as 30% of your CPU's cycles to do it...
That said, it may not matter if you're working in lower resolution files, or lower data rate stuff, either company makes great gear though. Both are intended for use with video systems. But ya do get something for the extra money on the CalDigit gear.
But if all you want to use it for is backup of data... anybody's drives would do this... doesn't have to be a raid either. Single FW drives will certainly hold the data as backup even if they won't play it without dropping frames.
OH, and Colorado... join the Denver FCP User Group... http://www.dfcpug.com We meet at the Colorado Film School in Denver on a monthly basis.
Jerry
Message was edited by: Jerry Hofmann

Since I upgraded to os 5.1 for my iPhone I can no longer type in reminders. Any suggestions how to get around having to use siri for reminders?

since I upgraded to os 5.1 for my iPhone I can no longer type in reminders. Any suggestions how to get around having to use siri for reminders?

Unfortunately, I have a very similar problem. Since I upgraded to os 5.1 on my new iPhone 4S the reminders screen will not add new reminders or scroll up and down. What's more strange is the screen will still scroll side to side allowing access to the Completed list, and both the Completed list and Date functions work normally so this must be an upgrades glitch.

Shall i buy anti virus software for my MAC pro lion

Do I need to install anti-virus software for my Mac pro?

You do not need any anti-virus for a Mac.
Do not download any software from the web to protect your Mac.
Apple releases updates that will offer all the protection a Mac needs.
Keep the software updated.
Many in this community use ClamXav and recommend using it.
Best.

Do I need antiviral software for a Mac Pro notebook

is antiviral protection needed for a Mac Pro notebook

WARNING: "Avast" is useless garbage that will cause you nothing but problems.
1. This comment applies to malicious software ("malware") that's installed unwittingly by the victim of a network attack. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the victim's computer. That threat is in a different category, and there's no easy way to defend against it. If you have reason to suspect that you're the target of such an attack, you need expert help.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user, but internally Apple calls it "XProtect." The malware recognition database is automatically checked for updates once a day; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
The following caveats apply to XProtect:
It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets (see below.)
It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
3. Starting with OS X 10.7.5, there has been another layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't actually been tested by Apple (unless it comes from the Mac App Store), but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. For most practical purposes, applications recognized by Gatekeeper as signed can be considered safe.
Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
It can easily be disabled or overridden by the user.
A malware attacker could get control of a code-signing certificate under false pretenses, or could find some other way to evade Apple's controls.
For more information about Gatekeeper, see this Apple Support article.
4. Beyond XProtect and Gatekeeper, there’s no benefit, in most cases, from any other automated protection against malware. The first and best line of defense is always your own intelligence. All known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and the malware attacker. If you're smarter than he thinks you are, you'll win.
That means, in practice, that you never use software that comes from an untrustworthy source. How do you know whether a source is trustworthy?
Any website that prompts you to install a “codec,” “plug-in,” "player," "extractor," or “certificate” that comes from that same site, or an unknown one, is untrustworthy.
A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
Pirated copies or "cracks" of commercial software, no matter where they come from, are unsafe.
Software of any kind downloaded from a BitTorrent or from a Usenet binary newsgroup is unsafe.
Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website. If it comes from any other source, it's unsafe.
5. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was never a good idea, and Java's developers have had a lot of trouble implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style "virus" affecting OS X. Merely loading a page with malicious Java content could be harmful. Fortunately, Java on the Web is mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice.
Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it — not JavaScript — in your browsers. In Safari, this is done by unchecking the box marked Enable Java in the Security tab of the preferences dialog.
Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a specific task, enable Java only when needed for the task and disable it immediately when done. Close all other browser windows and tabs, and don't visit any other sites while Java is active. Never enable Java on a public web page that carries third-party advertising. Use it only on well-known, password-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.
Follow these guidelines, and you’ll be practically as safe from malware as you can be.
6. Never install any commercial "anti-virus" or "Internet security" products for the Mac, as they all do more harm than good, if they do any good at all. If you need to be able to detect Windows malware in your files, use the free software ClamXav — nothing else.
Why shouldn't you use commercial "anti-virus" products?
Their design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere.
In order to meet that nonexistent threat, the software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
By modifying the operating system, the software itself may create weaknesses that could be exploited by malware attackers.
7. ClamXav doesn't have these drawbacks. That doesn't mean it's entirely safe. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
ClamXav is not needed, and should not be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware. Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else.
A Windows malware attachment in email is usually easy to recognize. The file name will often be targeted at people who aren't very bright; for example:
♥♥♥♥♥♥♥♥♥♥♥♥♥♥!!!!!!!H0TBABEZ4U!!!!!!!.AVI♥♥♥♥♥♥♥♥♥♥♥♥♥♥.exe
ClamXav may be able to tell you which particular virus or trojan it is, but do you care? In practice, there's seldom a reason to use ClamXav unless a network administrator requires you to run an anti-virus application.
8. The greatest harm done by anti-virus software, in my opinion, is in its effect on human behavior. It does little or nothing to protect people from emerging threats, but they get a false sense of security from it, and then they may behave in ways that expose them to higher risk. Nothing can lessen the need for safe computing practices.
9. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.

Apple RAID Card error in Mac Pro Tower

Hi, not sure where to post this, but we're getting an error using the Apple RAID card in a Mac Pro Intel Tower. It is "Controller reports RAID system 72-hour battery reserve unavailable - System is configured to run without battery."
Also the status: "Write caches disabled"
System seems to run OK. Is there a way to correct this and have the errors not appear?
Thanks in advanced.

Hello Tim
If this is a recent purchase then its quite normal see:
http://support.apple.com/kb/HT1346
Tony

Can you move a software raid 1 from one mac to another

I have a 2 disc software raid 1 on my powermac and I want to move it to my mac pro. Does anyone know if I can do this?

It appears that in Mac OS X 10.4, and again in the transition to 10.7, RAID format may have undergone dramatic changes. If you are trying to move a RAID array across those boundaries, you may not have the best results moving the drives directly.

Moving Thunderbold DAS with software RAID 1 to different Mac

Background: I am preparing to wipe my iMac (currently Mavericks) to then do a clean install of Yosemite. Attached to my iMac is a "WD MyBook Thunderbolt Duo". This external "DAS" drive model is a single enclosure that contains two, 2TB physical drives, and attaches to the iMac with a single Thunderbolt cable. I am not using any WesternDigital software on my iMac! Instead, I have used Disk Utility to manage the drive and have created a single 2TB software RAID 1 array (HFS+Journaled) incorporating both of the 2 physical drives as slices. The RAID 1 volume mounts as "DAS" on my Desktop and currently contains the majority of my media files.
Before beginning the repartitioning, formatting, and doing a clean install of Yosemite on the iMac's internal HDD, I plan on disconnecting the DAS's thunderbolt cable so it's safe from the install process.
Question: What I need to know is what to expect when I eventually reconnect the DAS to the new Yosemite installation. Will my RAID 1 volume "DAS" simply mount on the desktop as expected?
What I don't understand is where software RAID slice and volume configurations are stored. Is the software RAID 1 configuration stored as part of the partition table on the drives themselves or is it stored on the Mac? I am hoping to hear that the software RAID configuration is all on the drives themselves and therefore the drive can be reattached to a new Mac and it will just recognize the configuration and mount the volume normally with no additional effort. Can someone please confirm this to ease my mind (or save me before I go ahead with this).
Sorry to put this in the OS X Server forum but I thought that a software RAID question using Disk Utility would be best answered from the expertise here.
I appreciate any info you can provide.

Yes the software RAID configuration is stored on the drives themselves so it will be safe to disconnect from one Mac and reconnect to a second Mac.
Note to others. Any Mac that supports Thunderbolt is going to be running a new enough version of OS X so as to not cause a problem.

Is it true any Mac Pro can do software RAID 0?

I dont know why I never came across this, but is it true that any Mac Pro (or just macs in general??) can do software RAID 0 if you have two of the identical hard drives? Basically the OS handles everything and no special hardware or card is needed?
If true, what would be the reason so little people do it for faster disk access??

RAID Basics
For basic definitions and discussion of what a RAID is and the different types of RAIDs see RAIDs. Additional discussions plus advantages and disadvantages of RAIDs and different RAID arrays see:
RAID Tutorial;
RAID Array and Server: Hardware and Service Comparison>.
Hardware or Software RAID?
RAID Hardware Vs RAID Software - What is your best option?
RAID is a method of combining multiple disk drives into a single entity in order to improve the overall performance and reliability of your system. The different options for combining the disks are referred to as RAID levels. There are several different levels of RAID available depending on the needs of your system. One of the options available to you is whether you should use a Hardware RAID solution or a Software RAID solution.
RAID Hardware is always a disk controller to which you can cable up the disk drives. RAID Software is a set of kernel modules coupled together with management utilities that implement RAID in Software and require no additional hardware.
Pros and cons
Software RAID is more flexible than Hardware RAID. Software RAID is also considerably less expensive. On the other hand, a Software RAID system requires more CPU cycles and power to run well than a comparable Hardware RAID System. Also, because Software RAID operates on a partition by partition basis where a number of individual disk partitions are grouped together as opposed to Hardware RAID systems which generally group together entire disk drives, Software RAID tends be slightly more complicated to run. This is because it has more available configurations and options. An added benefit to the slightly more expensive Hardware RAID solution is that many Hardware RAID systems incorporate features that are specialized for optimizing the performance of your system.
For more detailed information on the differences between Software RAID and Hardware RAID you may want to read: Hardware RAID vs. Software RAID: Which Implementation is Best for my Application?

Installing Apple RAID Card on original Mac Pro 1.1

After months of waiting, I finally received my ordered Apple RAID Card suggested by Apple Italia per upgrading my Mac Pro station to handle HD editing. OK. Great. the problem is that the inside of my Mac Pro does not resemble the illustrations in the manual and I can't find any instructions for mounting the card (it's the right one, on this site I found it and ordered the right one, the blue card) but I DON'T have the PCI Slider illustrated in the manual. Since you clame that I CAN install this RAID card (otherwise I wouldn't have bought it!) but I don't know if the absence of ANY sliding element in the place of the PCI Slider mentioned means that I have to connect wires, change the inside, go to an Apple Authorized Dealer (where I bought the thing!)? Can anyone help me?

The instructions can be found here for the first generation Mac Pro:
http://manuals.info.apple.com/enUS/MacPro_RAIDCardInstallation.pdf.
Not sure what you mean by 'PCI Slider'. If you can reference the step this component is mention in the manual it might help.

10.6.2 upgrade killed software RAID 0 for my Mac Pro - can it be recovered?

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