1. Carpet Raid Mac Os X
2. Carpet Raid Mac Os Download

Installing Mac OS X Server on a Hardware RAID Volume Because configuring the Hardware RAID PCI Card erases the operating system on the server’s startup drive, you must reinstall Mac OS X Server after you configure the card. Here’s an overview of the procedure for reinstalling Mac OS X Server on a volume created with the hardware RAID card. Question: Q: Install High Sierra on RAID 0 Works! Hi, just to tell you that the clean installation and update on an iMac 11.2Mid 2010 of 21.5 'with x2 SSD Kingston on RAID 0 16GB Ram has worked perfectly with the MacOS High Sierra Patcher Tool for Unsupported Macs, without APFS, only Mac OS Plus registered.

At the time of output mac os 10.13 was removed support for boot from RAID 0 drives. The LefHand units we have are configured in RAID 5, I don't know if the newer ones support RAID 6 or not but quite frankly I don't think we would use it even if they did. By having two, the setup effectively becomes a RAID 1+5. The LeftHand SAN/iQ software supports asynchronous replication as well as snapshots, and does both quite well. 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. Select one of the disks you want to use in your RAID. Select ‘RAID’ tab in the main portion of the window.

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Carpet Raid Mac Os X

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1. Set Up Software RAID

Carpet Raid Mac Os Download

This chapter is from the book 

Set Up Software RAID

Before You Begin

Add a Newly Installed Hard Disk to the System

Partition a Hard Disk

Back Up Your Information

For high-performance systems such as Web servers for which disk performance and reliability are paramount, it's important for disks to be available in a redundant and fault-tolerant fashion. This is what RAID (Redundant Array of Independent Devices) provides: a scheme by which you can employ multiple hard disks in a set, mirroring or striping the data from each other, enhancing both access speed and reliability. The downside is that you have to buy at least three times as much disk storage as you need if you don't use RAID technology; but for the kinds of high-reliability applications that RAID is designed for, the cost of hardware is a small concern compared to the need for redundancy.

NOTE

Key Term -RAID (Redundant Array of Independent Devices)—A technology in which multiple hard disks are harnessed in a set so that data can be stored redundantly (for maximum reliability in case one of the disks goes bad) or across multiple disks at once (to maximize the speed of access).

RAID is often managed by a hardware solution (an add-on card in a high-end system) but this solution is unnecessary with Mac OS X's built-in software RAID option. The procedure for setting up software RAID assumes that you have installed at least two separate disks in the system, in addition to the startup disk. (Yes, that means you need at least three hard drives installed in or attached to your Mac. That's why RAID is intended for high-performance applications only!)

1. Open Disk Utility

Open the Finder and navigate to the Applications folder, then to the Utilities subfolder. Launch the Disk Utility program by double-clicking its icon.

2. Open the RAID Pane

First select an entire disk (not a volume) from the left pane of the Disk Utility window. Make sure that you're choosing one of the disks you want to add to the RAID array (and thereby protect its data redundantly or speed up its access with striping), not your Mac's startup disk. Then click the RAID tab to open the RAID setup pane.

3. Drag Disks to the RAID Set

The left pane of the Disk Utility window lists all the available disks; drag the disks you want to use as the redundant disks in the RAID array into the white RAID set box (do not select the same disk you chose in step 2). You can rearrange the disks into priority order by dragging them in the box, or delete disks from the set by selecting them and clicking the Delete icon above the box. As you add disks to the set, the estimated usable size of the array (depending on your selected RAID scheme) is updated dynamically.

NOTE

You must have at least two disks in the RAID set to create a RAID array; neither of these disks can be your startup disk. Creating a RAID array destroys all the data on all the disks you add to the RAID list. Be absolutely sure that you know what you're doing before creating a RAID array!

4. Select the RAID Scheme

You can select Stripe or Mirror as the RAID scheme. Striping is a good scheme for enhancing access speed because it works by storing parts of the same file across different disks so that all the pieces can be read at once; striping also preserves all your combined usable disk space. However, striping doesn't provide redundancy. Mirroring copies the files across all the RAID volumes, so it does provide redundancy, but not the speed benefits of striping.

NOTE

Key Terms -Striping—A RAID data storage scheme in which parts of each file are stored on different disks so that they can all be read independently at the same time for increased access speed.

Mirroring—A RAID data storage scheme in which all disks in the array are identical copies of each other so that if an error occurs on one disk, the other disks can correct it.

There are 'hybrid' RAID schemes that combine the benefits of both striping and mirroring; however, you must connect at least three RAID drives to your system to use this hybrid RAID scheme, and the scheme isn't supported by Disk Utility (which is, after all, designed for consumers with desktop Macs, rather than the high-availability server applications that use high-level RAID schemes). Professionalt have to worry about it any more.