You have to get the hassle of backing, remember the following things.
Following were typical artifacts to track it.
--- MILESTONE LABELS ---
AUG_03_migration_work_done
AUG_13_axlStuff_add_remove_userworking
AUG_31_1200_refine_axl_5_1_testing_deleteDID_UC
JULY_15_start_sketal_framework
JULY_19_minimal_ui_and_contols
JULY_23_UI_and_controls_working_M1
JULY_27_first_internal_demo
JULY_30_rangeDID_input_done
SEP_02_1200_for_customer_demo
--- SOURCE DIFFS OVER A PERIOD OF TIME ---
ALL_ccmdiffs.txt
ccmdiffs_from_creation_july15_M1_M2_aug10.txt
ccmdiffs_during_development_from_august11_to_august30.txt
ccmdiffs.txt
--- SPRINT FEATURES ---
ccm_revisions_changes_from_developer_perspect.txt
--- Project work space tree structure ---
cur_tree.txt
prev_tree.txt
--- Web archives backuped at regular intervals and patched --
Directory of C:\ccmusers_project\packaged_web_archive_backups
09/02/2010 10:50 AM
09/02/2010 10:50 AM
08/13/2010 05:55 PM 1,508,090 ccmapp_aug13_fordemo.war
08/17/2010 05:12 PM 1,519,778 ccmapp_aug17.war
08/10/2010 05:53 PM 1,534,414 ccmapp_aug_10_with_axl_login_calls_workin
g.war
08/09/2010 09:12 AM 1,502,429 ccmapp_aug_7_with_search_user_lcode_lname
_from_props_file.war
08/25/2010 03:07 PM 2,086,899 ccmapp_src_25AUG_0300.war
09/02/2010 10:46 AM 2,097,123 ccmapp_with_src_20100902_1045.war
08/04/2010 12:56 PM 459,095 ccmuserapp_aug4.war
08/05/2010 01:24 PM 1,493,679 ccmuserapp_aug_5_messagebundle_generic_js
p.war
07/28/2010 06:32 PM 431,972 ccmuserapp_july29_missing_jdbc_mai_activa
tion_jar.war
08/26/2010 02:37 PM 2,087,538 ccm_aug26_0237.war
08/31/2010 12:24 PM 2,052,187 ccm_aug31_1200.war
08/20/2010 08:01 PM 2,086,887 ccm_aug_20_0800PM_src_loggingtofile.war
12 File(s) 18,860,091 bytes
2 Dir(s) 65,679,618,048 bytes free
C:\ccmusers_project\packaged_web_archive_backups>
So I feel the necessity of ADE like SCM specially if web application goes on and on.