Product comparison · 2 raid controllers

Dell PERC H840 vs Lenovo ThinkSystem RAID 940-16i

Add a product
  • 9specifications compared
  • 5differ
  • 4identical
  • 16known for one product only

Key differences

The Lenovo ThinkSystem RAID 940-16i has 1 more PCI Express slots version than the Dell PERC H840 (4.0 vs 3.0). The Lenovo ThinkSystem 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 ThinkSystem RAID 940-16i (255 vs 16). RAID levels: 0, 1, 5, 6, 10, 50, 60 on the Dell PERC H840, 0, 1, 5, 6, 10, 50, 60, JBOD on the Lenovo ThinkSystem RAID 940-16i.

  • PCI Express slots version
    • PERC H840:3.0
    • ThinkSystem RAID 940-16i:4.0
  • RAID levels
    • PERC H840:0, 1, 5, 6, 10, 50, 60
    • ThinkSystem RAID 940-16i:0, 1, 5, 6, 10, 50, 60, JBOD
  • Data transfer rate
    • PERC H840:1.2 Gbit/s
    • ThinkSystem RAID 940-16i:12 Gbit/s
  • Number of devices supported
    • PERC H840:255
    • ThinkSystem RAID 940-16i:16

Side by side

Differences highlightedShow differences only (off)
Comparison of PERC H840, ThinkSystem RAID 940-16i
25 specifications
Ports & interfaces1 differ
Supported storage drive interfacesSASSAS
Host interfacePCI Express x8PCI Express x8
PCI Express slots versionDiffers3.04.0
Internal mini-SAS portsKnown for one2Unknown — not stated by the source
Performance4 differ
RAID levelsDiffers0, 1, 5, 6, 10, 50, 600, 1, 5, 6, 10, 50, 60, JBOD
Data transfer rateDiffers1.2 Gbit/s12 Gbit/s
SSD supportYesYes
Number of devices supportedDiffers25516
Compatible productsDiffers- 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 R940xaSR665 (7D2W/7D2V), SR645 (7D2Y/7D2X)
RAID Level MigrationKnown for oneUnknown — not stated by the sourceYes
Internal memoryKnown for oneUnknown — not stated by the source8000 MB
Hot-swapKnown for oneUnknown — not stated by the sourceYes
CertificationKnown for oneUnknown — not stated by the sourceUSA (FCC 47 CFR part 15 Subpart B, class B) Canada (ICES -003, Class B) Taiwan (CNS 13438) Japan (VCCI V-3) Australia/New Zealand (AS/NZS CISPR 22) Korea (RRA no 2013-24 & 25) Europe (EN55022/EN55024) Safety: EN/ IEC/ UL 60950 RoHS WEEE
Processoridentical
Built-in processorKnown for oneYesUnknown — not stated by the source
Processor familyKnown for oneLSIUnknown — not stated by the source
System requirementsidentical
Linux operating systems supportedKnown for oneYesUnknown — not stated by the source
Server operating systems supportedKnown for oneWindows Server 2012, Windows Server 2016Unknown — not stated by the source
Compatible operating systemsKnown for oneUnknown — not stated by the sourceMicrosoft Windows Server 2016 Microsoft Windows Server 2019 Red Hat Enterprise Linux 8.1 SUSE Linux Enterprise Server 12 SP5 SUSE Linux Enterprise Server 12 SP5 with Xen SUSE Linux Enterprise Server 15 SP1 SUSE Linux Enterprise Server 15 SP1 with Xen VMware vSphere Hypervisor (ESXi) 6.7 U3 VMware vS
Weight & dimensionsidentical
WidthKnown for one167.6 mmUnknown — not stated by the source
DepthKnown for one64.4 mmUnknown — not stated by the source
Logistics dataidentical
Harmonized System (HS) code8473308084733080
Other featuresidentical
Dell E-Value CodeKnown for one405-AAMZUnknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for oneUnknown — not stated by the source10 - 55 °C
Operating relative humidity (H-H)Known for oneUnknown — not stated by the source20 - 80%
Storage relative humidity (H-H)Known for oneUnknown — not stated by the source5 - 95%

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