Raid Setup For Mac
Use the four screws on the drive carrier to fix the hard drive in place, and then slide the carrier back into position. The data connector on the drive will plug into the Mac’s drive port automatically. Repeat this procedure for the other drives you’re installing (if any), and then close up your Mac—you’re done. Rigging the RAID Now comes the fun part: configuring your drives. If you’ve installed just one additional drive and are using the hard drive that came with your Mac Pro as part of the RAID, you’ll need to boot from your OS X Install disc; then you set up the RAID with the disc’s copy of Disk Utility (I’ll explain how in the next section). In the process, you’ll have to erase all the data on your startup drive.
However, the Mac Terminal can still create a RAID with simple text commands. Before proceeding, please safely eject and then physically disconnect all external storage devices (external hard drives, SD cards, etc) from your Mac computer, except the device on which you want to create the RAID. 3 This guide shows you how to set up RAID volumes using the RAID Utility application on a computer with a Mac Pro RAID Card or Xserve RAID Card.
Step-by-step to setting up RAID on Mac OS X Last updated 2010-02-19 - Send Feedback Related: fault tolerance, storage, RAID, macOS Please see the RAID-0 stripe and RAID-1 mirror how-to pages.
• Drag the drives you want to use in the RAID from the drive overview section on the left of the window into the RAID Set. • Hit ‘Options’ and tick ‘Automatically rebuild RAID mirror sets’. • Hit ‘Create”. • Once created, your RAID set will appear as below and can now be used to store files.
Sometimes it will prevent your Mac Pro from sleeping altogether. I went through so many hoops to get Highpoint to recognize the issue, and their solution was that 'it will need a firmware update'. That was three months ago and no firmware was updated. The price and performance of the Highpoint products is great, but they have some issues with Snow Leopard that apparently they aren't in a big hurry to resolve. I would stay away from this product until they fix their Snow Leopard issues.
A striped RAID will have disk read & write speeds that are around the sum total of your drives separately. So if you use two 500MB/s SSDs then your RAID will read & write at around 1GB/s.
The process isn’t as simple as the old Disk Utility GUI, but for users running Apple’s latest desktop operating system, it’s the next best thing to investing in third party software. To illustrate how users can manage RAID volumes in OS X El Capitan, we’ll use an example in which we want to create a 2TB RAID 0 volume from two 1TB SSDs, labeled TB1 and TB2. The first step is to determine the disk number of each drive you wish to include in your RAID, as we’ll need this information for the Terminal command that will eventually create the RAID volume. We can obtain this information in one of two ways: via Disk Utility or via the diskutil command line function. Looking at GUI method first, launch Disk Utility and select the first disk that is destined for your RAID volume. In our example, we’re using two Samsung 840 EVO SSDs, so we’ll select one of the disks, not volumes, from the Disk Utility sidebar on the left.
Open Disk Utility. You can find it under “/Applications/Utilities” or by typing “Disk Utility” into Spotlight. Click the File menu and choose the menu option labeled “RAID Assistant” 3. In the next dialog box choose the type of RAID array you’d like to create. Click Next when you’re ready.
If you have more than two, you can set one as Spare. Click the Next button after you’ve selected your disks. • Now you need to set the properties for your RAID. • Name: Give your RAID a name, like you would your hard drive. • Format: Most people should select Mac OS Extended (Journaled).
Everyone has important data on their computers, and no matter which hard disk or SSD you use, there are chances of disk failure that results in data loss; that is exactly why we create backups. The thing with backups, though, is that you need to restore data from them, back into your computer.
So I'm going to ask a few questions if that's okay. Since there won't be physically any more space left inside the case of the MP, I'm pretty content with just the 4 SATA ports.
This article is part of the series: • • • • How to Set Up RAID in macOS Sierra While the feature was removed in El Capitan, native software RAID has returned in macOS Sierra. You can access it through Disk Utility, and the graphical interface makes it easy to configure either RAID 1 or RAID 0. As you probably know, stands for Redundant Array of Independent Disks.
Get a pair, and see if you can create a stable stripe set of them. TEST them thoroughly. If all goes well, you can get the second pair of drives, and include them in the set. Just keep in mind, if they don't work, you lose time and money (returns = restocking fees + S/H both ways). So it's up to you, but I've the impression once you get your hands on a system, you're going to be in a hurry.
Part of the diskutil command, appleRAID can be used to create and manage RAID 0 (striped), RAID 1 (mirrored), and JBOD (concatenated) volumes. To use it, you’ll need to enter all of the RAID configuration info manually, including the type, name, and file system format.
Why they did this is not what we are here to discuss. Instead, we are presenting the solution to your RAIDing problems in El Capitan. Let’s dive into our trusted Terminal app. Turns out, the “diskutil” command has a “appleRAID” sub-command for creating RAIDs. The syntax for the command: diskutil appleRAID create stripe mirror concat setName fileSystemType memberDisks Before we get cracking on the command, you’ll need to figure out which disks you want to RAID. Connect the disks to your computer and launch Disk Utility.
But when your Mac writes data to the mirrored set, it will duplicate the data across all members of the set. This ensures that your data is protected against loss if any hard drive in the RAID 1 set fails. In fact, as long as any single member of the set remains functional, your Mac will continue to operate normally, with complete access to your data. • OS X 10.5.x through. The instructions given in this article use OS X Leopard. While these instructions should work for both past and future versions of OS X, some of the steps, nomenclature, or images shown in this article may be different.
You can use Disk Utility if you, say, bought a multi-bay drive chassis and have filled it with spare hard drive mechanisms you had sitting in storage. Or you already have a RAID array and need to reconfigure it. (In case you’re wondering, a software RAID is one where the Mac manages the RAID. A hardware RAID is a RAID array that includes a separate computer that manages the RAID. If you’re new to software RAIDs, here’s how to, then come back to this article to set up the RAID.) How to set up a RAID in macOS Sierra’s Disk Utility This will erase any data that exists on the disks you want to use for the RAID. Back up that data if you want to save it.
But that; Disk Utility got a major facelift, and it also had its feature set modified. One of the major changes was that Apple removed any ability to set up and configure a redundant array of independent disks (RAID).
• Select the ‘Zero Out Data’ security option, and then click OK. • Click the ‘Erase’ button.
(If you use external drives, be sure to attach each one to its own FireWire bus; FireWire provides greater bandwidth than USB 2.0 in this situation, and daisy-chained FireWire drives make for slower throughput.) RAIDs work best when you use identical drives of the same capacity. For example, if you created a mirrored RAID with a 300GB drive and a 500GB drive, 200GB of the 500GB drive would be wasted, because the drive would mirror only 300GB. Similarly, you lose any potential advantage of splitting data between drives in a striped array when your smallest-capacity drive is full. More important, you need to think about how many drives to add. You can, if you wish, use the drive that came with your Mac Pro as part of the RAID. But doing so requires erasing all the data from that drive.
A RAID Slice means the drive is an active part of the array and mirrors your data. A Spare is a drive that sits in waiting until a Slice fails, then data is mirrored to the spare automatically. If you have two drives, they each need to be set as RAID Slice. If you have more than two, you can set one as Spare. Click the Next button after you’ve selected your disks. • Now you need to set the properties for your RAID. • Name: Give your RAID a name, like you would your hard drive.
I don't mind spending a few hours re-installing everything, because whenever that happens it gives me an excuse to clear my system and get it to optimal performance again. I'm considering using the hard drive that ships with the Mac Pro as a backup system HD (with everything pre-configured and ready to go) to swap in in the event a drive dies and I have an immediate need to use FCP or something. I NEVER have and NEVER will save anything important on my system HD, everything important always is allocated to some external drive that has a dedicated backup drive. I'm so looking forward to it, you have no idea Well, I'm going for those Torqx's because, to my knowledge from a few articles I've read, the 128GB Torqx's are the fastest SSD's you can buy (outside of the OCZ Colossus series which are way too insanely expensive) and I want the fastest setup I can get.
MacOS also offers JBOD, which stands for “Just A Bunch Of Disks.” It’s as prosaic as it sounds. The OS combines two or more drives under one drive name and icon, creating one “logical” disk out of multiple physical disks.
You can call it a mirrored-striped-software-RAID-set if you like. How to: • Open Disk Utitlity (Finder > User > Applications > Utilities). • Format each disk you want to use in your RAID set to ‘Mac OS X Extended (Journaled). Do this by selecting each disk in the left hand menu and heading over to the ‘Erase’ tab.
How to Create a RAID in Mac OS 10.11 The graphical interface of Mac Disk Utility in Mac OS 10.11 (El Capitan) does not include the ability to create a RAID. However, the Mac Terminal can still create a RAID with simple text commands. Before proceeding, please safely eject and then physically disconnect all external storage devices (external hard drives, SD cards, etc) from your Mac computer, except the device on which you want to create the RAID. Do not attempt the following while your Mac is in Recovery Mode. Proceed only when your computer has started normally.
Chuck size determines the size of those pieces. If you work with large files, like with video or 3D graphics, choose 128K or 256K. If you are a more general purpose user who does email, writes, or works in spreadsheets or databases, choose 32K or 64K. • If you are building a RAID 1, you’ll see an option to “Automatically rebuild.” This means that if a drive is removed and then replaced, the data will automatically be restored to the new drive.
Which one should you choose? • (Striped) RAID 0: This one’s all about speed. It doesn’t offer data protection, so you’ll need to rely on another backup system, like Time Machine.
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Best Raid Drives For Mac
There is a feature on some cards (Areca and the RR43xx have it), called MAID. It allows you to set a timer where the drives will spin down after a user set time limit. The CPU/s stay active, but with thier own power management, it's not too bad as far as power consumption these days (i.e. Nehalem's features, which the OP will be getting a new systems shortly - Nehalem or Gulftown). SL has caused problems with multiple cards (specifically stability issues with 10.6.2, with cards including Areca, Highpoint, and Apple's own POS).
If you return to the main Disk Utility window, you’ll see your brand new RAID array in the sidebar. Click on it to see more info about the array. If you have selected RAID 0, the disks you selected will be automatically striped together. If you’ve selected RAID 1, those disks will become mirrors of one another. And if you’ve selected JBOD, all those disks will now appear under a single name and icon within the operating system, but no other changes will take place.
• Click the ‘Erase’ button. • Repeat steps 3-9 for each additional hard drive that will be part of the RAID 1 mirror set. Be sure to give each hard drive a unique name..
• Name your RAID in the ‘RAID Set Name’ text box. • Select ‘Mac OS X Extended (Journaled)’ as your format in the ‘Format’ drop down (unless you specifically want another format and know what you are doing). • Select ‘Mirrored RAID Set’ in the ‘RAID Type’ drop down. • Drag the drives you want to use in the RAID from the drive overview section on the left of the window into the RAID Set. • Hit ‘Options’ and tick ‘Automatically rebuild RAID mirror sets’. • Hit ‘Create”.
The other option Disk Utility offers in its RAID pane—Concatenated Disk Set—is technically not a RAID. Rather, it’s another way of treating multiple hard disks as a single volume. In this case, the operating system simply combines the storage capacity of all the drives in the set, to create what appears to the operating system to be a single volume. A concatenated disk set provides no swifter access to your data, and it offers no additional data protection. But it does allow you to spread large files such as video projects and backup archives across multiple disks. Prepping the hardware The Mac Pro accommodates 1-inch SATA 3-Gbps hard drives internally, though you can also use external hard drives to create a RAID.
It doesn’t offer data protection, so you’ll need to rely on another backup system, like Time Machine. But if backup isn’t an issue and you need the performance, go with RAID 0. • (Mirrored) RAID 1: The same data is written to all the drives.
RAID cards are PCIe based in MP's (applies to other buses as well). The card sees the PCIe bus power 'hiccup', and dumps the firmware. So the card is no longer initialized. Hence if you move the mouse or hit the keyboard, the system will KP/BSOD if the array is a boot device, or if the OS disk is separate, not have access to the array.
Open Disk Utility. You can find it under “/Applications/Utilities” or by typing “Disk Utility” into Spotlight.
• Two or more hard drives. Be aware that the process of creating RAID 1 mirrored sets will erase all of the data on the hard drives. It’s best if the hard drives you use are the same make and model, but this is not a requirement. • One or more drive enclosures. Mac Pro users may have internal drive bays available. Everyone else will need one or more external drive enclosures.
CDS would allow you to concatenate them into one 1TB volume. This means that you will be able to save files onto these disks as if it was a single 1TB volume instead of four 256GB ones. Now that we have given you a basic idea of what the various levels are, let’s dive headfirst into some RAID fun. How To Setup RAID on Your Mac Before Apple came out with OS X El Capitan, the process to set up RAID volumes was very simple. The graphical “Disk Utility” app on the Mac had a simple option to RAID a number of drives into either level 0,1 or to concatenate the drives (CDS/JBOD). When Apple redesigned the disk utility in OS X El Capitan, they quietly removed the RAID option.
Having said all that, TM for ML Server is supposed to be more reliable but for me it has always been and probably always will be a backup solution for single home users only. Which is was what it was designed for in the first place. Using it in an enterprise or critical services environment.. I don't think so. Other's no doubt may offer their own opinions and as in many things YMMV. The above is just my 2p. Your help is excellent, thank you.
If this button is greyed out, make sure you’ve selected the volume in the sidebar that starts with “RAID Member” rather than the disk itself. Select a disk format in the next dialog box.
Everything else can stay on the default settings. Click Next when you’re done. Confirm that you’ve selected the right disks, and click “Create” to finalize the array. Note that this will automatically format the disks and destroy any data on the drives. Wait for your array to spin up. This might take a couple minutes, depending on the size of your array and your interface speed.
Typically, this would be automatically filled in, but here you’ll need to make an affirmative selection. Mac OS Extended (Journaled) is ideal. Conclusion RAID o or RAID 1 can both be configured easily through macOS Sierra’s Disk Utility app.
This can lead to a significant boost in performance, since both disks can work together to provide data. RAID 0 includes no duplication, and if one drive fails in a RAID 0 array, the whole thing is hosed. This is awesome for applications that require high disk performance but can tolerate a lower level of data integrity, like scientific computing or AV processing. MacOS also offers JBOD, which stands for “Just A Bunch Of Disks.” It’s as prosaic as it sounds. The OS combines two or more drives under one drive name and icon, creating one “logical” disk out of multiple physical disks.