iDRAC vs iLO: Server Remote Management Explained

If your server lives in a comms room across town, or you simply do not want to walk to it every time something goes wrong, remote management is essential. Dell and HPE both build a dedicated management controller into their servers: Dell calls it iDRAC, and HPE calls it iLO.

This guide explains what these controllers do, how the versions and licence levels differ, where IPMI and Redfish fit in, and how to secure remote management on a refurbished server.

What is out-of-band server management?

Out-of-band management means managing a server through a channel that does not depend on its main operating system or network. The work is done by a baseboard management controller (BMC): a small, dedicated processor on the motherboard with its own firmware and, usually, its own network port.

Because the BMC runs independently, you can use it when the operating system has crashed, is being installed, or the server is switched off but still connected to power. Typical tasks include powering the server on or off, watching the boot process, checking temperatures, fans, power supplies and drives, reading hardware logs and updating firmware.

iDRAC and iLO are Dell’s and HPE’s own BMC implementations, each with its own web interface, licensing and feature set.

What is Dell iDRAC?

iDRAC stands for integrated Dell Remote Access Controller. Dell describes iDRAC9 with Lifecycle Controller as agent-free remote administration that is embedded in every PowerEdge server, so there is no extra software to install. The version depends on the server generation:

• iDRAC8: 13th generation servers such as the R630, R730 and T330.
• iDRAC9: 14th to 16th generation servers, including the R640, R740, R650 and R660.
• iDRAC10: 17th generation servers such as the R670.

Which iDRAC licence do you need?

Dell’s iDRAC9 support guide lists four licence tiers:

• Basic: default on 100 to 500 series rack and tower servers. Covers health monitoring, firmware updates and remote power and boot control.
• Express: default on 600 series and higher. Adds features such as email alerts, remote OS deployment and crash screen capture.
• Enterprise: adds the HTML5 virtual console, virtual media, directory services (Active Directory and LDAP), two-factor authentication, System Lockdown, remote syslog and power capping.
• Datacenter: introduced with iDRAC9 firmware 4.00 and adds telemetry streaming, extended thermal management and other data-centre features.

What is HPE iLO?

iLO stands for Integrated Lights-Out. As with iDRAC, the version follows the server generation. HPE’s QuickSpecs confirm iLO 4 on the ProLiant DL380 Gen9 and iLO 5 on Gen10 models such as the DL380 and ML350, and HPE’s iLO pages pair iLO 6 with Gen11 and iLO 7 with Gen12 servers.

Licensing is simpler than Dell’s. HPE ProLiant servers include iLO Standard as an embedded feature, while iLO Advanced is an optional licence. HPE says iLO Advanced includes the full integrated remote console with virtual keyboard, video and mouse, multi-user collaboration, console record and replay, and virtual media and folders. On Gen9, directory services integration requires Advanced, and on Gen10 the Server Configuration Lock security feature does too.

iDRAC vs iLO: how do they compare?

In day-to-day use the two are more alike than different. Both give you a web interface, hardware health, event logs, power control and firmware updates. The bigger practical question is usually which licence is installed on the server you are buying.

Where do IPMI and Redfish fit in?

IPMI (Intelligent Platform Management Interface) is the older industry standard for talking to BMCs, and it is still supported by iDRAC8, iDRAC9 and iLO 5. However, the IPMI promoters, including Dell, HPE and Intel, said in 2020 that no further updates to the IPMI specification are planned, and pointed to DMTF’s Redfish as a modern alternative.

Redfish is a standard from the DMTF that uses common web technologies, which makes it well suited to scripting and automation. Dell lists Redfish across all iDRAC8 and iDRAC9 licence tiers, and HPE’s QuickSpecs describe the iLO 4 RESTful API as conforming to Redfish 1.0. For example, the DL380 Gen10 QuickSpecs list both Redfish and IPMI 2.0 among its supported standards. If you use open-source tools, our review of open-source server monitoring tools covers options that can poll these interfaces.

How do you secure iDRAC and iLO?

A management controller has deep access to the server, including power, firmware and the console, so treat it as a high-value target. These practices apply to both:

• Use a separate management network. Connect the dedicated iDRAC or iLO port to an isolated network or VLAN, never directly to the internet. Reach it through a VPN when working remotely. Our networking range covers switches suitable for a separate management segment.
• Change default credentials. Set strong, unique passwords on every controller as soon as the server arrives. iDRAC9 servers can ship with a factory-generated unique password, but older systems may not.
• Keep firmware current. BMC firmware receives security fixes like any other software. Our guide to regular firmware updates in server maintenance explains how to plan updates safely.
• Use stronger authentication where licensed. Directory services and two-factor authentication are available with iDRAC Enterprise, and directory integration with iLO Advanced.
• Turn off what you do not use. Disable legacy services such as Telnet and limit which users have administrator rights.

What to check when buying a refurbished server

Ask which iDRAC or iLO licence is installed, and confirm it covers the features you need, particularly the remote console. Dell iDRAC9 licences are bound to the Service Tag, so a licence installed on a server stays with that server. Also confirm the controller firmware version and that it has been reset, so you are not inheriting a previous owner’s users or network settings.

Our refurbished servers are tested before listing and configured to order, so ask about the management controller and its licence when you request a build.

Frequently asked questions

Can I upgrade iDRAC Express to Enterprise?

Yes. iDRAC features are unlocked by licence rather than hardware, so you can add an Enterprise or Datacenter licence to a server that shipped with Express. Dell says iDRAC9 licences are perpetual and bound to the server’s Service Tag, and it offers 30-day trial licences for Enterprise and Datacenter if you want to test the features first.

Is HPE iLO free?

The base level is. HPE ProLiant servers include iLO Standard as an embedded feature, which covers health monitoring and core remote management. iLO Advanced is an optional paid licence that adds the full integrated remote console, virtual media, multi-user collaboration and some security features. Check which licence a refurbished server carries before you rely on those features.

Does iDRAC need software installed on the server?

No. Dell describes iDRAC as agent-free and embedded in every PowerEdge server, so there is nothing to install for core management: connect power and a network cable and it is ready. Dell does offer an optional iDRAC Service Module for the operating system, which some features rely on, such as forwarding OS-level alerts to management consoles.

Can iDRAC share a network port with the server?

Yes. iDRAC8 and iDRAC9 can run over a shared server network port as well as a dedicated management port. Dell’s feature comparison notes that on 500 series and earlier rack and tower servers, the dedicated iDRAC port needs an extra hardware card. A dedicated port on a separate management network is the more secure option where available.

Is iDRAC or iLO better?

Neither is better across the board. Both offer remote power control, health monitoring, firmware updates, IPMI and Redfish, with advanced features behind a licence. The right choice usually follows the server brand you prefer and the licence level installed. If you already manage Dell or HPE servers, sticking to one brand keeps tools and processes simpler.

Need a server you can manage remotely from day one? Tell us which features matter and whether you prefer Dell or HPE, and we will match a suitable server and configuration through our server configuration page, with nationwide delivery from Johannesburg.