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1. Mac Pro Software Raid 0 Performance Reviews
2. Mac Pro Software Raid 0 Performance 2017
3. Windows Software Raid 0

If you hear the term “RAID” and immediately think of World of Warcraft, then leave now and go back to your guild. In short, a RAID is a set of physical volumes configured via hardware or software to appear as one volume of data. In some cases, RAID arrays are used to increase the reliability of data storage by configuring multiple disks to mirror the same volume of data, so that if one drive fails, the others will be intact and accessible. When it comes to performance, however, something called a striped RAID is used, and this where things get fun, and a little bit risky. For a quick education on RAID you read this wiki article and learn more about their uses in data storage.

In a stock Mac Pro, you create a RAID by installing at least one additional drive and then using Apple’s Disk Utility to configure the drives. And Striped RAID Set (RAID Level 0)—as well.

Currently, my mid-2012 MacBook Pro is configured with a striped RAID using two 512GB SSDs, and the performance gains have been substantial:

BEFORE: Single Solid State Drive

After: Dual Solid State Drives in a Striped RAID

To put these speed tests in more simple terms, going from a single SSD to the striped RAID configuration using two Solid State Drives gave me a 2.2x performance gain on Read speeds and a 4.3x performance gain on Write speeds. This is a massive performance gain that can be felt immediately; it only takes about 15 seconds to boot Yosemite on my mid-2012 MacBook Pro.

However, there is an element of risk to consider here before proceeding.

Using a striped RAID configuration means that you are twice as likely to have a drive failure, simply because you are relying on two disks to store your data and if one drive in a striped array fails, all of your data is lost. I've worked with nearly 100 SSDs at this point, and not one has failed or even been dead on arrival; however, knowing my chances of a drive failure are now doubled, I back-up my machine everyday, without fail.

So, if you're still up for moving to a striped RAID, here's what you need to do…

1. Back-up all of your data to an external drive using Time Machine or Super Duper.
2. Make sure you have two SSDs successfully installed. If you haven't installed your second drive yet, read this.
3. Boot up your Yosemite Installer. If you don't have a Yosemite Installer, read this.
4. Run Disk Utility and follow this guide to making a Striped RAID.
5. Install Yosemite to your RAID, and move your data back into place.
6. Keep your RAID healthy and running blazing fast by enabling TRIM support.

I'm hopeful this article has helped to get you more up to speed on how to use RAID to improve your laptop's performance bring you to new levels.

Read more Tips and How To's like this one on TechCo.

This article was originally published on Random Nerds and authored by Joe Corbett. If you enjoyed it, visit Random Nerds for more great pieces.

Disk Utility User Guide

Mac Pro Software Raid 0 Performance Reviews

You can create a Redundant Array of Independent Disks (RAID) set to optimize storage performance and increase reliability in case of a disk failure. You can also create a set that concatenates smaller disks to act as one larger disk.

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1. In the Disk Utility app on your Mac, choose File > RAID Assistant.

2. Select a set type:

   • Striped (RAID 0) set: A striped RAID set can speed up access to your data. You can’t create a RAID set on your startup disk; you must first start up your computer from another disk.

   • Mirrored (RAID 1) set: Protect your data against hardware failure with a mirrored RAID set. When you create a mirrored RAID set, your data is written to multiple disks so the information is stored redundantly. You can’t create a RAID set on your startup disk; you must first start up your computer from another disk.

   • Concatenated (JBOD) set: Increase storage space with a concatenated disk set. If you need one large disk, but you have several smaller disks, you can create a concatenated disk set to use as one large disk.

3. Select the checkboxes of the disks you want to include in the set.

4. For each disk, click the pop-up menu in the Role column and choose “RAID slice” or “Spare” to designate the disk as a standard member or spare in the set, then click Next.

5. Enter a name for the RAID set in the RAID Name field.

6. Click the Format pop-up menu, then choose a volume format that you want for all the disks in the set. (See File system formats available in Disk Utility.)

7. Click the “Chunk size” pop-up menu, then choose a disk chunk size that you want used for all the disks.

   When you create a striped set, chunks of data from the same file are distributed across the drives. Ideally, you want data distributed across drives evenly and at an optimum size so that it can be efficiently accessed. If you want high data throughput from your set, choose a smaller chunk size so that data is spread across the drives and one drive can be accessing data while another is seeking the next chunk. With mirrored disk sets, choose a chunk size that matches the data you’re accessing. For example, when working with video files, your Mac is accessing large chunks of data, whereas when using a database of many small records, your disks may be accessing smaller chunks of information.

8. If you are creating a mirrored RAID set, select the “Automatically rebuild” checkbox to allow the set to be automatically rebuilt when member disks are reconnected.

9. Click Create.

10. Click Done.

Mac Pro Software Raid 0 Performance 2017

If you have a Mac Pro with a Mac Pro RAID card, use RAID Utility. It uses the RAID card for better performance and to create more types of RAID sets.

Windows Software Raid 0