28th November 2019

superuser
11

What does a RAID 0 do?

RAID-0: "Striped set without parity" or "Striping". Provides improved performance and additional storage but no redundancy or fault tolerance. A single disk failure destroys the entire array because when data is written to a RAID 0 drive, the data is broken into fragments.

Correspondingly, can you use raid on SSD?

Storage systems generally do not use RAID to pool SSDs for performance purposes. Flash-based SSDs inherently offer higher performance than HDDs, and enable faster rebuilds in parity-based RAID. Rather than improve performance, vendors typically use SSD-based RAID to protect data if a drive fails.

Can you RAID 0 with different size hard drives?

A RAID 0 can be created with disks of differing sizes, but the storage space added to the array by each disk is limited to the size of the smallest disk. For example, if a 100 GB disk is striped together with a 350 GB disk, the size of the array will be 200 GB (100 GB × 2).

What is a JBOD RAID?

JBOD, an acronym for just a bunch of disks, is precisely that—just a bunch of disks. It has few of the merits of RAID, but there's virtue in simplicity. The individual disks of a JBOD array can each serve as a volume or they can be concatenated, or spanned, to form one single logical volume or LUN.
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