Product comparison · 2 raid controllers

Dell PERC H840 vs Lenovo RAID 940-16I

8specifications compared
6differ
2identical
11known for one product only

Key differences

The Lenovo RAID 940-16I has 1 more PCI Express slots version than the Dell PERC H840 (4.0 vs 3.0). The Lenovo RAID 940-16I has 10.8 Gbit/s more data transfer rate than the Dell PERC H840 (12 Gbit/s vs 1.2 Gbit/s). The Dell PERC H840 has 239 more devices supported than the Lenovo RAID 940-16I (255 vs 16). Supported storage drive interfaces: SAS on the Dell PERC H840, SAS, Serial ATA on the Lenovo RAID 940-16I. Host interface: PCI Express x8 on the Dell PERC H840, PCI Express x4 on the Lenovo RAID 940-16I.

Supported storage drive interfaces
- PERC H840:SAS
- RAID 940-16I:SAS, Serial ATA
Host interface
- PERC H840:PCI Express x8
- RAID 940-16I:PCI Express x4
PCI Express slots version
- PERC H840:3.0
- RAID 940-16I:4.0
RAID levels
- PERC H840:0, 1, 5, 6, 10, 50, 60
- RAID 940-16I:0, 1, 5, 10, 50, 60
Data transfer rate
- PERC H840:1.2 Gbit/s
- RAID 940-16I:12 Gbit/s
Number of devices supported
- PERC H840:255
- RAID 940-16I:16

Side by side

Differences highlightedShow differences only

Comparison of PERC H840, RAID 940-16I
19 specifications	A Dell PERC H840 View product	B Lenovo RAID 940-16I View product
Ports & interfaces3 differ
Supported storage drive interfacesDiffers	SAS	SAS, Serial ATA
Host interfaceDiffers	PCI Express x8	PCI Express x4
PCI Express slots versionDiffers	3.0	4.0
Internal mini-SAS portsKnown for one	2	Unknown — not stated by the source
Performance3 differ
RAID levelsDiffers	0, 1, 5, 6, 10, 50, 60	0, 1, 5, 10, 50, 60
Data transfer rateDiffers	1.2 Gbit/s	12 Gbit/s
SSD support	Yes	Yes
Number of devices supportedDiffers	255	16
Compatible productsKnown for one	- PowerEdge R7415 - PowerEdge R640 - PowerEdge R740 - PowerEdge R840 - PowerEdge R440 - PowerEdge T640 - PowerEdge R540 - PowerEdge T440 - PowerVault NX3240 - PowerEdge R740xd2 - PowerEdge R740XD - PowerEdge R940 - PowerEdge R7425 - PowerEdge R940xa	Unknown — not stated by the source
RAID Level MigrationKnown for one	Unknown — not stated by the source	Yes
Form factorKnown for one	Unknown — not stated by the source	Low-Profile MD2 PCIe AIC
Processoridentical
Built-in processorKnown for one	Yes	Unknown — not stated by the source
Processor familyKnown for one	LSI	Unknown — not stated by the source
System requirementsidentical
Linux operating systems supportedKnown for one	Yes	Unknown — not stated by the source
Server operating systems supportedKnown for one	Windows Server 2012, Windows Server 2016	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	167.6 mm	Unknown — not stated by the source
DepthKnown for one	64.4 mm	Unknown — not stated by the source
Logistics dataidentical
Harmonized System (HS) code	84733080	84733080
Other featuresidentical
Dell E-Value CodeKnown for one	405-AAMZ	Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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