Single review: SYBA SD-PEX40054 PCI-Express 2.0 x2 SATA III (6.0Gb/s) HyperDuo 4-port RAID Controller Card

SYBA SD-PEX40054 PCI-Express 2.0 x2 SATA III (6.0Gb/s) HyperDuo 4-port RAID Controller Card

RAID 0/1/10 JBOD
4 x SATA 6.0Gb/s Internal Connectors
Up to 6Gb/s

Raid 0 does not normally decrease write speed 02/15/2014

This review is from: SYBA SD-PEX40054 PCI-Express 2.0 x2 SATA III (6.0Gb/s) HyperDuo 4-port RAID Controller Card

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Overall Review:

Regarding the manufacturer response for Lloyd L. on 12/4/2013, "Raid 0" does not normally decrease write speed. A quick search on Google or Wikipedia states:

RAID 0
RAID 0 comprises striping (but no parity or mirroring). This level provides no data redundancy nor fault tolerance, but improves performance through parallelism of read and write operations across multiple drives. RAID 0 has no error detection mechanism, so the failure of one disk causes the loss of all data on the array.

Please get your facts straight before defending your possibly faulty product

Manufacturer Response:

Dear Customer,

When using a RAID 0 the write speed for the raid is done in parallel with all the drives

connected. A single drive that normally gets 500k write speed will be reduced to 250k write speed

in a RAID 0 with one additional drive. This increases performance since the data is written

simultaneously to each drive but does not increase the write speed for each drive.

RAID 0 does not decrease the overall write speed for the drives it only divides it for each

evenly connected drive. So a RAID 0 will decrease write speeds for each individual drive.

Thank you for purchasing one of our products, and for leaving us your valuable feedback.

Please feel free to contact us @ sybausa.com if you require further assistance.

Regards SYBA CST 02242014

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Sing L.
Verified Owner
Owned For: less than 1 day

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