How to find out unused Indexes (regardless of restarts of server or database)?

Hello colleagues,

do you know how to get list of unused indexes regardless of restarts of MS-SQL-Server or Database?

Because (if I understand correctly to information in BOL ) all content of dynamic management view sys.dm_db_index_usage_stats is deleted during restart of MS-SQL-Server or Detach Database.

Due to when I use my next script (to generate report with list of unused indexes) immediately (or after short time) after restart of MS-SQL-Server it contains misleading/confusing information.

:-(

USE [AdventureWorks]
GO

DECLARE @CurrDate as varchar(10), @CurrTime as varchar(5), @DatePartsSeparator as char(1), @EmptyDate as smalldatetime;
SET @DatePartsSeparator = '/';
SET @CurrDate =                        RIGHT ('0' + CONVERT(varchar,DATEPART (day,GETDATE())), 2);
SET @CurrDate = @CurrDate + @DatePartsSeparator;
SET @CurrDate = @CurrDate + RIGHT ('0' + CONVERT(varchar,DATEPART (month,GETDATE())), 2);
SET @CurrDate = @CurrDate + @DatePartsSeparator;
SET @CurrDate = @CurrDate + CONVERT(varchar,DATEPART (year,GETDATE()));

SET @CurrTime =                        RIGHT ('0' + CONVERT(varchar,DATEPART (hour,GETDATE())), 2);
SET @CurrTime = @CurrTime + ':';
SET @CurrTime = @CurrTime + RIGHT ('0' + CONVERT(varchar,DATEPART (minute,GETDATE())), 2);

SET @EmptyDate = CONVERT(smalldatetime, '01' + @DatePartsSeparator + '01' + @DatePartsSeparator + '2000');

SELECT SERVERPROPERTY('servername') AS [Server]
	, DB_NAME(s.database_id) AS [Database]
	, o.type_desc [ObjectType]
	, o.name AS [Object]
	, i.name AS [Index]
	, (user_seeks + user_scans + user_lookups) AS Reads
	, user_updates AS Writes
	, ((SELECT SUM(p.rows) FROM sys.partitions p WHERE p.index_id = s.index_id AND s.object_id = p.object_id) / 100) AS [Rows(1000)]
	, CASE
			WHEN s.user_updates < 1 THEN 100
			ELSE CAST(1.00 * (s.user_seeks + s.user_scans + s.user_lookups) / s.user_updates AS decimal (12,5))
		END AS Reads_per_Write
	, (SELECT TOP 1 luu.[Last_User_Usage] FROM (
			SELECT COALESCE(s.last_user_lookup, @EmptyDate) AS [Last_User_Usage] 
			UNION 
			SELECT COALESCE(s.last_user_scan, @EmptyDate) AS [Last_User_Usage] 
			UNION 
			SELECT COALESCE(s.last_user_seek, @EmptyDate) AS [Last_User_Usage]
		) AS luu ORDER BY luu.[Last_User_Usage] DESC) AS [Last_User_Usage]
	, COALESCE(s.last_user_update, @EmptyDate) AS [Last_User_Update]
	, CASE WHEN i.is_disabled = 0 THEN 'N' ELSE 'Y' END AS [Disabled]
	, i.index_id
	, o.create_date AS [Index_Created]
	, o.modify_date AS [Index_Modified]
	, u.name AS [Index_Owner]
	, @CurrDate AS [This_Report_Created]
	, @CurrTime AS [This_Report_Created_Time]
	, CONVERT(CHAR(40), SUSER_SNAME()) AS [This_Report_Created_by_User]
	, 'DROP INDEX ' + QUOTENAME(i.name) + ' ON ' + QUOTENAME(DB_NAME(s.database_id)) + '.' + QUOTENAME(c.name) + '.' + QUOTENAME(OBJECT_NAME(s.object_id)) as 'drop statement'
FROM sys.dm_db_index_usage_stats s 
	INNER JOIN sys.indexes i ON i.index_id = s.index_id AND s.object_id = i.object_id   
	INNER JOIN sys.objects o ON s.object_id = o.object_id
	INNER JOIN sys.schemas c ON o.schema_id = c.schema_id
	LEFT OUTER JOIN sys.database_principals u ON OBJECTPROPERTY ( o.object_id , 'OwnerId' ) = u.principal_id
WHERE OBJECTPROPERTY(s.object_id,'IsUserTable') = 1
	AND s.database_id = DB_ID()   
	AND i.type_desc = 'nonclustered'
	AND i.is_primary_key = 0
	AND i.is_unique_constraint = 0
	AND o.type IN ('U','V')
	AND o.is_ms_shipped = 0
	AND (SELECT SUM(p.rows) FROM sys.partitions p WHERE p.index_id = s.index_id AND s.object_id = p.object_id) > 10000
ORDER BY Reads;
GO

__________________________________________________________ If isn't above described anything, the following applies: Technical details: * OS: Windows Server v2008-R2, English, Enterprise Edition, x64, SP1 ** My User-Account is member of 'Administrators' local security group. * MS-SQL-Server: v2008-R2, English, Enterprise Edition, x64, SP1 ** My User-Account is member of 'SysAdmin' db-role.