Let’s explore why you should not by getting some perspective on what RAID drives really are.
HOW TO SET UP A RAID EXTERNAL DRIVE FOR MAC HOW TO
Technically, you can set up your RAID drives configuration employing both SSD and HDD disks simultaneously.īut the real question here, instead of how to do RAID with SSD and HDD is: SHOULD you? So, is getting the best of both worlds possible? The short answer is no. In fact, when we consider the original acronym for RAID, way back in 1988, Redundant Array of Inexpensive Disks (now Redundant Array of Independent Disks), the main purpose was indeed to increase performance while keeping it affordable. But even though there are great affordable SSD options nowadays, an HDD is still cheaper. This is a valid question, especially when it comes to costs.Īn SSD provides superior performance. How to do RAID with SSD and HDD combined? Then, your next question will most likely be: It uses the RAID card for better performance and to create more types of RAID sets.There are so many benefits from upgrading your data management setup for a RAID array, that you’ll first ask yourself why you haven’t done it sooner.
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HOW TO SET UP A RAID EXTERNAL DRIVE FOR MAC PRO
If you have a Mac Pro with a Mac Pro RAID card, use RAID Utility. 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. 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. With mirrored disk sets, choose a chunk size that matches the data you’re accessing. 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. Ideally, you want data distributed across drives evenly and at an optimum size so that it can be efficiently accessed.
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When you create a striped set, chunks of data from the same file are distributed across the drives. (See File system formats available in Disk Utility.)Ĭlick the “Chunk size” pop-up menu, then choose a disk chunk size that you want used for all the disks. Select the checkboxes of the disks you want to include in the set.įor 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.Įnter a name for the RAID set in the RAID Name field.Ĭlick the Format pop-up menu, then choose a volume format that you want for all the disks in the 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. You can’t create a RAID set on your startup disk you must first start up your computer from another disk.Ĭoncatenated (JBOD) set: Increase storage space with a concatenated disk set. When you create a mirrored RAID set, your data is written to multiple disks so the information is stored redundantly. Mirrored (RAID 1) set: Protect your data against hardware failure with a mirrored RAID set. You can’t create a RAID set on your startup disk you must first start up your computer from another disk. Striped (RAID 0) set: A striped RAID set can speed up access to your data. In the Disk Utility app on your Mac, choose File > RAID Assistant.