2-ch RAID0 Design (NVMe-IP) reference design manual
■RAID0 system uses multiple storages to extend total storage capacity and increase write/read performance. Assumed that total number of device is N, total storage capacity is equal to N multiply by amount of storage and write and read speed are almost equal to N multiply by speed of one SSD. Data format of RAID0 is shown in Figure 1-1.
■Data stream of the host side are split into a small stripe and transfer to one SSD at a time. Stripe size is the data size to store in one SSD before switching to other SSDs.
■In the reference design, two SSDs are applied to run RAID0 system. Stripe size is equal to 512 bytes (one sector unit). Two SSDs connecting in the system should be same model to get the best performance and correct capacity. By using RAID0, the total capacity is equal to two times of SSDs and the performance for both write and read are almost two times. In our test system, Write speed of RAID0 NVMe is about 4200 MB/s and Read speed is about 6200 MB/s. (Performance from NVMe-IP demo by using one SSD are 2100 MB/s for write command and 3200 MB/s for read command).
■User can modify RAID0 reference design to increase the numbers of NVMe SSD to achieve the better performance and bigger disk capacity.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2-Oct-17 |
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Revision 1.0 |
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237 KB |
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