diff --git a/Makefile.am b/Makefile.am
index e652205..0af1b6d 100755
--- a/Makefile.am
+++ b/Makefile.am
@@ -36,6 +36,7 @@
 phosphor_image_updater_SOURCES = \
 	activation.cpp \
 	version.cpp \
+	serialize.cpp \
 	item_updater.cpp \
 	item_updater_main.cpp
 
diff --git a/activation.cpp b/activation.cpp
index 64fd53e..8dc4d38 100644
--- a/activation.cpp
+++ b/activation.cpp
@@ -1,6 +1,7 @@
 #include "activation.hpp"
 #include "item_updater.hpp"
 #include "config.h"
+#include "serialize.hpp"
 
 namespace phosphor
 {
@@ -141,6 +142,7 @@
 uint8_t RedundancyPriority::priority(uint8_t value)
 {
     parent.parent.freePriority(value);
+    storeToFile(parent.versionId, value);
     return softwareServer::RedundancyPriority::priority(value);
 }
 
diff --git a/configure.ac b/configure.ac
index 71ede44..c6ca235 100755
--- a/configure.ac
+++ b/configure.ac
@@ -68,7 +68,8 @@
     [The software version manager interface])
 AC_DEFINE(FILEPATH_IFACE, "xyz.openbmc_project.Common.FilePath",
     [The common file path interface])
-
+AC_DEFINE(PERSIST_DIR, "/var/lib/obmc/phosphor-bmc-code-mgmt/",
+    [The dir where activation data is stored in files])
 AC_DEFINE(SYSTEMD_BUSNAME, "org.freedesktop.systemd1",
     [The systemd busname])
 AC_DEFINE(SYSTEMD_PATH, "/org/freedesktop/systemd1",
diff --git a/item_updater.cpp b/item_updater.cpp
index 8bd868b..12f818b 100644
--- a/item_updater.cpp
+++ b/item_updater.cpp
@@ -6,6 +6,7 @@
 #include "xyz/openbmc_project/Software/Version/server.hpp"
 #include <experimental/filesystem>
 #include "version.hpp"
+#include "serialize.hpp"
 
 namespace phosphor
 {
@@ -194,6 +195,7 @@
     //       If not, don't continue.
 
     this->activations.erase(entryId);
+    removeFile(entryId);
 }
 
 ItemUpdater::ActivationStatus ItemUpdater::validateSquashFSImage(
diff --git a/serialize.cpp b/serialize.cpp
new file mode 100644
index 0000000..8c97c89
--- /dev/null
+++ b/serialize.cpp
@@ -0,0 +1,51 @@
+#include "config.h"
+#include <experimental/filesystem>
+#include <cereal/archives/json.hpp>
+#include <fstream>
+#include "serialize.hpp"
+
+namespace phosphor
+{
+namespace software
+{
+namespace updater
+{
+
+namespace fs = std::experimental::filesystem;
+
+void storeToFile(std::string versionId, uint8_t priority)
+{
+    if(!fs::is_directory(PERSIST_DIR))
+    {
+        fs::create_directory(PERSIST_DIR);
+    }
+    std::string path = PERSIST_DIR + versionId;
+
+    std::ofstream os(path.c_str());
+    cereal::JSONOutputArchive oarchive(os);
+    oarchive(cereal::make_nvp("priority", priority));
+}
+
+void restoreFromFile(std::string versionId, uint8_t& priority)
+{
+    std::string path = PERSIST_DIR + versionId;
+    if (fs::exists(path))
+    {
+        std::ifstream is(path.c_str(), std::ios::in);
+        cereal::JSONInputArchive iarchive(is);
+        iarchive(cereal::make_nvp("priority", priority));
+    }
+}
+
+void removeFile(std::string versionId)
+{
+    std::string path = PERSIST_DIR + versionId;
+    if (fs::exists(path))
+    {
+        fs::remove(path);
+    }
+}
+
+} // namespace phosphor
+} // namespace software
+} // namespace openpower
diff --git a/serialize.hpp b/serialize.hpp
new file mode 100644
index 0000000..7b6461f
--- /dev/null
+++ b/serialize.hpp
@@ -0,0 +1,34 @@
+#pragma once
+
+#include <experimental/filesystem>
+#include "config.h"
+
+namespace phosphor
+{
+namespace software
+{
+namespace updater
+{
+
+namespace fs = std::experimental::filesystem;
+
+/** @brief Serialization function - stores activation information to file
+ *  @param[in] versionId - The version for which to store information.
+ *  @param[in] priority - RedundancyPriority value for that version.
+ **/
+void storeToFile(std::string versionId, uint8_t priority);
+
+/** @brief Serialization function - restores activation information from file
+ *  @param[in] versionId - The version for which to retrieve information.
+ *  @param[in] priority - RedundancyPriority reference for that version.
+ **/
+void restoreFromFile(std::string versionId, uint8_t& priority);
+
+/** @brief Removes the serial file for a given version.
+ *  @param[in] versionId - The version for which to remove a file, if it exists.
+ **/
+void removeFile(std::string versionId);
+
+} // namespace phosphor
+} // namespace software
+} // namespace openpower