diff --git a/redfish-core/include/utils/systems_utils.hpp b/redfish-core/include/utils/systems_utils.hpp
index e376f0f..4f61490 100644
--- a/redfish-core/include/utils/systems_utils.hpp
+++ b/redfish-core/include/utils/systems_utils.hpp
@@ -5,6 +5,7 @@
 #include "bmcweb_config.h"
 
 #include "async_resp.hpp"
+#include "dbus_singleton.hpp"
 #include "dbus_utility.hpp"
 #include "error_messages.hpp"
 #include "human_sort.hpp"
@@ -17,6 +18,7 @@
 
 #include <algorithm>
 #include <array>
+#include <cstdint>
 #include <functional>
 #include <memory>
 #include <string>
@@ -116,4 +118,144 @@
         "/xyz/openbmc_project/inventory", 0, interfaces,
         std::bind_front(handleSystemCollectionMembers, asyncResp));
 }
+
+inline void getManagedHostProperty(
+    const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
+    const std::string& systemName, const std::string& systemPath,
+    std::function<void(const uint64_t computerSystemIndex)> callback)
+{
+    dbus::utility::getProperty<uint64_t>(
+        "xyz.openbmc_project.EntityManager", systemPath,
+        "xyz.openbmc_project.Inventory.Decorator.ManagedHost", "HostIndex",
+        [asyncResp, systemName, systemPath, callback = std::move(callback)](
+            const boost::system::error_code& ec, const uint64_t hostIndex) {
+            if (ec)
+            {
+                BMCWEB_LOG_WARNING("DBUS response error {}", ec);
+                messages::resourceNotFound(asyncResp->res, "ComputerSystem",
+                                           systemName);
+                return;
+            }
+            BMCWEB_LOG_DEBUG("Got index {} for path {}", hostIndex, systemPath);
+            callback(hostIndex);
+        });
+}
+
+inline void afterGetComputerSystemSubTreePaths(
+    const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
+    const std::string& systemName,
+    std::function<void(const uint64_t computerSystemIndex)>& callback,
+    const boost::system::error_code& ec,
+    const dbus::utility::MapperGetSubTreePathsResponse& objects)
+{
+    sdbusplus::message::object_path systemPath;
+    if (ec)
+    {
+        if (ec.value() == boost::system::errc::io_error)
+        {
+            BMCWEB_LOG_WARNING("EIO - System not found");
+            messages::resourceNotFound(asyncResp->res, "ComputerSystem",
+                                       systemName);
+            return;
+        }
+
+        BMCWEB_LOG_ERROR("DBus method call failed with error {}", ec.value());
+        messages::internalError(asyncResp->res);
+        return;
+    }
+
+    const auto& found = std::ranges::find_if(
+        objects, [systemName](const sdbusplus::message::object_path& path) {
+            return path.filename() == systemName;
+        });
+
+    if (found == objects.end())
+    {
+        BMCWEB_LOG_WARNING("Failed to match systemName: {}", systemName);
+        messages::resourceNotFound(asyncResp->res, "ComputerSystem",
+                                   systemName);
+        return;
+    }
+
+    systemPath = *found;
+
+    getManagedHostProperty(asyncResp, systemName, systemPath,
+                           std::move(callback));
+}
+
+/**
+ * @brief Retrieve the index associated with the requested system based on the
+ * ManagedHost interface
+ *
+ * @param[i] asyncResp  Async response object
+ * @param[i] systemName The requested system
+ * @param[i] callback   Callback to call once the index has been found
+ *
+ * @return None
+ */
+inline void getComputerSystemIndex(
+    const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
+    const std::string& systemName,
+    std::function<void(const uint64_t computerSystemIndex)>&& callback)
+{
+    if constexpr (BMCWEB_EXPERIMENTAL_REDFISH_MULTI_COMPUTER_SYSTEM)
+    {
+        constexpr std::array<std::string_view, 1> interfaces{
+            "xyz.openbmc_project.Inventory.Decorator.ManagedHost"};
+        dbus::utility::getSubTreePaths(
+            "/xyz/openbmc_project/inventory", 0, interfaces,
+            std::bind_front(afterGetComputerSystemSubTreePaths, asyncResp,
+                            systemName, std::move(callback)));
+    }
+    else
+    {
+        // on single-host, fallback to index 0
+        BMCWEB_LOG_DEBUG(
+            "Single-host detected, fallback to computerSystemIndex 0");
+        callback(0);
+    }
+}
+
+inline sdbusplus::message::object_path getHostStateObjectPath(
+    const uint64_t computerSystemIndex)
+{
+    const sdbusplus::message::object_path hostStatePath(
+        "/xyz/openbmc_project/state/host" +
+        std::to_string(computerSystemIndex));
+
+    return hostStatePath;
+}
+
+inline std::string getHostStateServiceName(const uint64_t computerSystemIndex)
+{
+    std::string hostStateService = "xyz.openbmc_project.State.Host";
+    if constexpr (BMCWEB_EXPERIMENTAL_REDFISH_MULTI_COMPUTER_SYSTEM)
+    {
+        hostStateService += std::to_string(computerSystemIndex);
+    }
+
+    return hostStateService;
+}
+
+inline sdbusplus::message::object_path getChassisStateObjectPath(
+    const uint64_t computerSystemIndex)
+{
+    const sdbusplus::message::object_path chassisStatePath(
+        "/xyz/openbmc_project/state/chassis" +
+        std::to_string(computerSystemIndex));
+
+    return chassisStatePath;
+}
+
+inline std::string getChassisStateServiceName(
+    const uint64_t computerSystemIndex)
+{
+    std::string chassisStateService = "xyz.openbmc_project.State.Chassis";
+    if constexpr (BMCWEB_EXPERIMENTAL_REDFISH_MULTI_COMPUTER_SYSTEM)
+    {
+        chassisStateService += std::to_string(computerSystemIndex);
+    }
+
+    return chassisStateService;
+}
 } // namespace redfish