Product comparison · 2 raid controllers

Dell PERC H840 vs HP SmartArray P420 RAID controller PCI Express x8 6 Gbit/s

7specifications compared
5differ
2identical
13known for one product only

Key differences

The HP SmartArray P420 RAID controller PCI Express x8 6 Gbit/s has 4.8 Gbit/s more data transfer rate than the Dell PERC H840 (6 Gbit/s vs 1.2 Gbit/s). The Dell PERC H840 has 110.6 mm more width than the HP SmartArray P420 RAID controller PCI Express x8 6 Gbit/s (167.6 mm vs 57 mm). The HP SmartArray P420 RAID controller PCI Express x8 6 Gbit/s has 176.6 mm more depth than the Dell PERC H840 (241 mm vs 64.4 mm). Only the Dell PERC H840 has SSD support. RAID levels: 0, 1, 5, 6, 10, 50, 60 on the Dell PERC H840, 0, 1, 1+0, 5, 6, 50, 60 on the HP SmartArray P420 RAID controller PCI Express x8 6 Gbit/s.

RAID levels
- PERC H840:0, 1, 5, 6, 10, 50, 60
- SmartArray P420 RAID controller PCI Express x8 6 Gbit/s:0, 1, 1+0, 5, 6, 50, 60
Data transfer rate
- PERC H840:1.2 Gbit/s
- SmartArray P420 RAID controller PCI Express x8 6 Gbit/s:6 Gbit/s
SSD support
- PERC H840:Yes
- SmartArray P420 RAID controller PCI Express x8 6 Gbit/s:No
Width
- PERC H840:167.6 mm
- SmartArray P420 RAID controller PCI Express x8 6 Gbit/s:57 mm
Depth
- PERC H840:64.4 mm
- SmartArray P420 RAID controller PCI Express x8 6 Gbit/s:241 mm

Side by side

Differences highlightedShow differences only

Comparison of PERC H840, P420
20 specifications	A Dell PERC H840 View product	B HP SmartArray P420 RAID controller PCI Express x8 6 Gbit/s Model P420 View product
Ports & interfacesidentical
Supported storage drive interfaces	SAS	SAS
Host interface	PCI Express x8	PCI Express x8
PCI Express slots versionKnown for one	3.0	Unknown — not stated by the source
Internal mini-SAS portsKnown for one	2	Unknown — not stated by the source
Internal SAS portsKnown for one	Unknown — not stated by the source	2
Performance3 differ
RAID levelsDiffers	0, 1, 5, 6, 10, 50, 60	0, 1, 1+0, 5, 6, 50, 60
Data transfer rateDiffers	1.2 Gbit/s	6 Gbit/s
SSD supportDiffers	Yes	No
Number of devices supportedKnown for one	255	Unknown — not stated by the source
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
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 & dimensions2 differ
WidthDiffers	167.6 mm	57 mm
DepthDiffers	64.4 mm	241 mm
HeightKnown for one	Unknown — not stated by the source	191 mm
WeightKnown for one	Unknown — not stated by the source	370 g
Logistics dataidentical
Harmonized System (HS) codeKnown for one	84733080	Unknown — not stated by the source
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.

More raid controller comparisons

All raid controller comparisons