RAID 0 is not a good solution for permanent storage. A great use for a stripe volume is as a scratch disk when using Photoshop, Lightroom, or editing uncompressed video it will give you the fastest possible scratch disk for these purposes. We recommend stripe volumes ONLY for temporary storage – ie for any application where speed is most important and you have a recent backup. SoftRAID will help you choose the correct value depending on the type of files you plan to store on your stripe volume. When you create a SoftRAID stripe volume, you will be asked to select the stripe unit size for your new volume. The size of each block is called the “stripe unit size.” The first block of the volume is on the first disk, the second is on the second disk, etc. In a stripe volume, data is spread across the volume’s disks in blocks. A stripe volume cannot work unless all of its disks are present and working correctly.
Because of this, read and write speeds are a fraction of what they would be if a single disk had to be accessed for the entire file.
The disks work simultaneously, in parallel, each disk reading just a small part of the file. Each disk is asked to send back just the part of the file which it holds. When reading or writing a large file, the request gets sent to all of the disks at the same time. Each disk contains only part of the volume.
Stripe volumes, also known as RAID 0 volumes, spread the data for a volume over 2 or more disks. For that reason, and because a stripe volume isn’t protected against disk failure, RAID 0 is NOT a viable alternative for permanent storage Over time, that risk increases-our calculations show on average a 25% risk of a disk failure within 10 years with a four disk RAID2. When considering using RAID 0, it’s important to remember that all disks can fail, even one that is considered ‘reliable’. Stripe volumes are great for scratch files or when you have readily available backups of the files on your volume. When a disk fails on a stripe volume, you will lose all the files on the volume. However, they provide no protection from disk failure. SoftRAID stripe volumes give you the highest possible performance.
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