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July 29th, 2020 23:00
XPS 17 9700 RAID 0
Hi, folks!
I am wondering if having two m.2 NVMe drives (PCIe 3.0 x4 / NVMe 1.3) in RAID 0 (stripping) configuration makes any sense for this laptop?
I have heard that if both m.2 ports are using the same channel, RAID 0 won't bring any benefits because current NVMes are almost maxing the throughput of the channel.
Does anyone know if XPS 17 has separate channels for each available SSD m.2 slot?
Thanks!
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DELL-Cares
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July 30th, 2020 17:00
We tried reaching you on a private message but did not receive a response. Please feel free to reply to the private message whenever you are available.
outruller
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August 8th, 2020 12:00
After trying to talk to your assigned expert, he told to "talk to local technician" - not that helpful at all
GoldNetAU
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May 6th, 2021 03:00
Come on Dell.. a perfectly reasonable question from outruller one would think.. i have the exact same question.
to stripe or not to stripe.. this is the question.
ejn63
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May 6th, 2021 06:00
I believe you'll find a report on the forums that both drives share a channel -- beyond that, RAID0 has been shown in many tests to be of little or no use with SSDs in boosting performance, while it doubles your risk of data loss.
It's not worth the trouble.
jphughan
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May 6th, 2021 07:00
@GoldNetAU I agree with ejn63's reply above, but if you really want to do this, you should be able to set your system to RAID mode rather than AHCI if it's not already set that way, and then follow this Dell article for setting up RAID, either prior to installing the OS or even performing an in-place migration from a single disk setup to a RAID setup within the OS.
GoldNetAU
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May 6th, 2021 08:00
thanks for the responses..
i now know both M2 slots share the same pci bus rendering raid 0 little or no performance increase (redundancy issues aside) since the performance of a single drive consumes most of the channel bandwidth to begin with.
for a high end laptop such as this one would expect dual channels standard. suggestion to others is to check the specs before purchase if you want to stripe your drive.
still a nice laptop and imo worth the money.