Consulta para relatar alocação de espaço em disco e espaço usado

Aqui está a consulta que o Management Studio usa para preencher esses números:

SELECT
(SELECT SUM(CAST(df.size as float)) FROM sys.database_files AS df 
   WHERE df.type in ( 0, 2, 4 ) ) AS [DbSize],
SUM(a.total_pages) AS [SpaceUsed],
(SELECT SUM(CAST(df.size as float)) FROM sys.database_files AS df 
   WHERE df.type in (1, 3)) AS [LogSize]
FROM
sys.partitions p join sys.allocation_units a 
  on p.partition_id = a.container_id 
left join sys.internal_tables it 
  on p.object_id = it.object_id

Você precisa realizar matemática aqui, assim como o Management Studio faz para obter os mesmos números. Além disso, a junção à esquerda sys.internal_tablesparece supérflua na melhor das hipóteses. Então, ajustando essa consulta para corresponder à sua saída ideal:

SELECT
(SELECT CONVERT(DECIMAL(18,2), SUM(CAST(df.size as float))*8/1024.0)
   FROM sys.database_files AS df 
   WHERE df.type in ( 0, 2, 4 ) ) AS [DbSize],
CONVERT(DECIMAL(18,2), SUM(a.total_pages)*8/1024.0) AS [SpaceUsed],
(SELECT CONVERT(DECIMAL(18,2), SUM(CAST(df.size as float))*8/1024.0)
   FROM sys.database_files AS df 
   WHERE df.type in (1, 3)) AS [LogSize]
FROM sys.partitions p join sys.allocation_units a 
  on p.partition_id = a.container_id;

Com esta atualização, supondo que seu banco de dados não mude nesse meio tempo, ele deve render:

753475.94    744030.07    2900.00

Fazendo algumas contas simples e isolando apenas os três números que você deseja:

;WITH t(s) AS
(
  SELECT CONVERT(DECIMAL(18,2), SUM(size)*8/1024.0)
   FROM sys.database_files
   WHERE [type] % 2 = 0
), 
d(s) AS
(
  SELECT CONVERT(DECIMAL(18,2), SUM(total_pages)*8/1024.0)
   FROM sys.partitions AS p
   INNER JOIN sys.allocation_units AS a 
   ON p.[partition_id] = a.container_id
)
SELECT 
  Allocated_Space = t.s, 
  Available_Space = t.s - d.s,
  [Available_%] = CONVERT(DECIMAL(5,2), (t.s - d.s)*100.0/t.s)
FROM t CROSS APPLY d;

A consulta de Aaron é boa, mas como alternativa, uso esta consulta das consultas DMV
de Glenn Berry (você precisaria alterar a matemática para TBs):

-- Individual File Sizes and space available for current database
-- (Query 36) (File Sizes and Space)
SELECT f.name AS [File Name] , f.physical_name AS [Physical Name], 
CAST((f.size/128.0) AS DECIMAL(15,2)) AS [Total Size in MB],
CAST(f.size/128.0 - CAST(FILEPROPERTY(f.name, 'SpaceUsed') AS int)/128.0 AS DECIMAL(15,2)) 
AS [Available Space In MB], [file_id], fg.name AS [Filegroup Name]
FROM sys.database_files AS f WITH (NOLOCK) 
LEFT OUTER JOIN sys.data_spaces AS fg WITH (NOLOCK) 
ON f.data_space_id = fg.data_space_id OPTION (RECOMPILE);

Aqui está algum SQL que pode funcionar para você.

Create Table #dbInfo (dId smallint, dbName sysname, gId smallint NULL, segName varchar(256) NULL, 
       filName varchar(520) NULL, sizeMg decimal(10,2) null, 
       usedMg decimal(10,2) null, freeMg decimal(10,2) null, 
       pcntUsed decimal(10,2) null, pcntFree decimal(10,2) null)
Declare @sSql varchar(1000)
Set @sSql = 'Use [?];
Insert #dbInfo (dId, dbName, gid, segName, filName, sizeMg, usedMg)
Select db_id(), db_name(), groupid, rtrim(name), filename, Cast(size/128.0 As Decimal(10,2)), 
Cast(Fileproperty(name, ''SpaceUsed'')/128.0 As Decimal(10,2))
From dbo.sysfiles Order By groupId Desc;'
Exec sp_MSforeachdb @sSql
Update #dbInfo Set
freeMg = sizeMg - usedMg,
pcntUsed = (usedMg/sizeMg)*100,
pcntFree = ((sizeMg-usedMg)/sizeMg)*100

select * from #dbInfo compute sum(sizeMG),  sum(FreeMg) 
drop table #dbInfo

É SQL antigo, mas ainda funciona. Um dia desses vou reescrevê-lo para usar o sys.database_files como a resposta de Aaron.

Depois de trabalhar em uma pergunta semelhante ( Querying True Physical Database File Sizes ), acho que uma consulta que exibe os diferentes tamanhos de arquivo, separados, por exemplo, por log e banco de dados, e o tamanho do arquivo no disco seria mais útil para a maioria dos usuários.

Isso inclui o tamanho do arquivo do sistema e quanto espaço está ocupando no disco, bem como o tamanho do arquivo SQL, o espaço SQL usado e, por extensão, o espaço livre do SQL. Inclui o caminho completo do arquivo que está sendo avaliado. Um usuário precisaria alterar o cálculo para 'Size_On_Disk_Bytes' se o disco for formatado usando um tamanho de alocação diferente do padrão (4096 bytes).

SELECT fg.data_space_id AS FGID,
   (f.file_id) AS File_Id,
   -- As provided by OP, size on disk in bytes.
   REPLACE(CONVERT(VARCHAR,CONVERT(MONEY, CAST(f.size AS FLOAT) * 8.00 * 1024), 1), '.00','') AS Size_On_Disk_Bytes,
   ROUND((CAST(f.size AS FLOAT) * 8.00/1024)/1024,3) AS Actual_File_Size,
   ROUND(CAST((f.size) AS FLOAT)/128,2) AS Reserved_MB,
   ROUND(CAST((FILEPROPERTY(f.name,'SpaceUsed')) AS FLOAT)/128,2) AS Used_MB,
   ROUND((CAST((f.size) AS FLOAT)/128)-(CAST((FILEPROPERTY(f.name,'SpaceUsed'))AS FLOAT)/128),2) AS Free_MB,
   f.name,
   f.physical_name
FROM sys.database_files f 
    LEFT JOIN sys.filegroups fg
    ON f.data_space_id = fg.data_space_id

Além disso, essa consulta retornará informações sobre o espaço na unidade de volume que hospeda os arquivos. O usuário precisará ter acesso a sys.master_files.

SELECT DISTINCT dovs.logical_volume_name AS LogicalName,
dovs.volume_mount_point AS Drive,
CONVERT(INT,dovs.available_bytes/1048576.0) AS FreeSpaceInMB
FROM sys.master_files mf
CROSS APPLY sys.dm_os_volume_stats(mf.database_id, mf.FILE_ID) dovs
ORDER BY FreeSpaceInMB ASC

Algo que eu montei. Você PRECISA DO POWERSHELL em seu SQL Server para executar isso. Não tenho certeza da versão. Isso levará os tamanhos das unidades e relatará os tamanhos dos arquivos e o espaço livre, bem como o espaço livre em disco.

Não é 100% original e partes dele eu encontrei em outros lugares na internet e coloquei tudo junto. Foi um PITA para encaixar nas margens certas, então você pode ter que brincar com os parênteses

--drop table ##DB_FILE_INFO
 --alter procedure super_drive_info3 

 --as

  if exists ( select * from tempdb.dbo.sysobjects o
    where o.xtype in ('U') and o.name in ('##DB_FILE_INFO' ))
drop table ##DB_FILE_INFO

if exists ( select * from tempdb.dbo.sysobjects o
    where o.xtype in ('U') and o.name in ('##output'))
drop table ##output

 create table ##DB_FILE_INFO (
[server_Name] varchar(255) not null,
[database_name] varchar(255) not null,
[File_ID]           int     not null,
[File_Type]     int     not null ,
[Drive]     varchar(255)    not null ,
[Logical_Name]      varchar(255)    not null ,
[Physical_Name]     varchar(255)    not null ,
[FILE_SIZE_MB]      int     not null ,
[SPace_USED_MB] int     not null ,
[Free_space]    int     not null ,
[Max_SIZE]      int     not null ,
[Percent_Log_growth_enabled]    int     not null ,
[growth_rate]   int     not null ,
[current_date]      datetime        not null
)
--go
declare @sql    nvarchar(4000)
set @sql =
'use ['+'?'+']
 --if db_name() <> N''?'' goto Error_Exit
 insert into ##DB_FILE_INFO
(
    [server_Name],
    [database_name],
    [File_ID],
[File_Type],
[Drive],
[Logical_Name],
[Physical_Name],
[FILE_SIZE_MB],
[SPace_USED_MB],
[Free_space],
[Max_SIZE],
[Percent_Log_growth_enabled],
[growth_rate],
[current_date]
)
SELECT 
@@servername as [Server_Name],
db_name() as database_name,
[file_id] AS [File_ID],
[type] AS [File_Type],
substring([physical_name],1,1) AS [Drive],
[name] AS [Logical_Name],
[physical_name] AS [Physical_Name],
CAST([size] as DECIMAL(38,0))/128. AS [File Size MB], 
CAST(FILEPROPERTY([name],''SpaceUsed'') AS DECIMAL(38,0))/128. AS 
[Space_Used_MB], 
(CAST([size] AS DECIMAL(38,0))/128) - 
(CAST(FILEPROPERTY([name],''SpaceUsed'') AS DECIMAL(38,0))/128.) AS [Free 
 Space],
[max_size] AS [Max_Size],
[is_percent_growth] AS [Percent_Growth_Enabled],
[growth] AS [Growth Rate],
getdate() AS [Current_Date]
FROM sys.database_files'
 exec sp_msforeachdb @sql
 declare @svrName varchar(255)
declare @sql2 varchar(400)
--by default it will take the current server name, we can the set the server 
name as well
set @svrName = @@SERVERNAME
set @sql2 = 'powershell.exe -c "Get-WmiObject -ComputerName ' + 
QUOTENAME(@svrName,'''') + ' -Class Win32_Volume -Filter ''DriveType = 3'' | 
select name,capacity,freespace | 

foreach{$_.name+''|
 ''+$_.capacity/1048576+''%''+$_.freespace/1048576+''*''}"'
 --creating a temporary table
 CREATE TABLE ##output
 (line varchar(255))
 --inserting  in to temporary table
 insert ##output
 EXEC xp_cmdshell @sql2;

 with Output2 
 --(drivename, capacity(gb),freespace(gb), always_on_status)
 as
 (
 select @@servername as server_name, 
rtrim(ltrim(SUBSTRING(line,1,CHARINDEX(':',line) -1))) as drivename
 ,round(cast(rtrim(ltrim(SUBSTRING(line,CHARINDEX('|',line)+1,
 (CHARINDEX('%',line) -1)-CHARINDEX('|',line)) )) as float)/1024,2) as 
 'capacityGB'
 ,round(cast(rtrim(ltrim(SUBSTRING(line,CHARINDEX('%',line)+1,
 (CHARINDEX('*',line) -1)-CHARINDEX('%',line)) )) as float) /1024 ,2)as 
 'freespaceGB'
 ,CASE WHEN (SERVERPROPERTY ('IsHadrEnabled')=1) THEN 'YES' WHEN 
 (SERVERPROPERTY ('IsHadrEnabled')=0) THEN 'NO'ELSE 'NOT AVAILABLE' END AS 
 ALWAYS_ON_STATUS
  --into #output2
 from ##output
   where line like '[A-Z][:]%'
   --order by drivename
  ),
  DB_FILE_INFO2 as
 (
 select server_Name,
    database_name,
    File_ID,
File_Type,
Drive,
Logical_Name,
Physical_Name,
FILE_SIZE_MB,
SPace_USED_MB,
Free_space,
Max_SIZE,
Percent_Log_growth_enabled,
growth_rate
--current_date 
from ##DB_FILE_INFO 
--inner join #output b on a.drive = b.drivename and a.server_Name = 
b.server_name
)
select  
getdate() as Today_Date,
a.server_Name,
a.database_name,
a.Drive,
a.Logical_Name,
a.Physical_Name,
a.FILE_SIZE_MB,
a.Space_Used_MB,
--sum(a.SPace_USED_MB) as hg,
a.Free_space as Free_Space_in_File,
 --Percentage_file_free = (a.Space_Used_MB/a.FILE_SIZE_MB),
b.capacitygb as Total_Drive_capacity,
b.freespacegb as Total_Free_Space,
c.total_log_size_mb,
c.active_log_size_mb
--,Percentage_free_space = ((cast(Free_space as decimal))/(cast(FILE_SIZE_MB 
as decimal)) * 100)

from DB_FILE_INFO2 a
inner join output2 b on a.server_Name = b.server_name and a.Drive = 
 b.drivename
cross apply sys.dm_db_log_stats (db_id(a.database_name)) c
order by a.Drive, a.database_name

--drop table ##DB_FILE_INFO
--drop table #output

O script abaixo pode ser usado para obter as seguintes informações: 1. Informações de tamanho do banco de dados 2. FileSpaceInfo 3. AutoGrowth 4. Modelo de recuperação 5. Informações de log_reuse_backup

CREATE TABLE #tempFileInformation
(
DBNAME          NVARCHAR(256),
[FILENAME]      NVARCHAR(256),
[TYPE]          NVARCHAR(120),
FILEGROUPNAME   NVARCHAR(120),
FILE_LOCATION   NVARCHAR(500),
FILESIZE_MB     DECIMAL(10,2),
USEDSPACE_MB    DECIMAL(10,2),
FREESPACE_MB    DECIMAL(10,2),
AUTOGROW_STATUS NVARCHAR(100)
)
GO

DECLARE @SQL VARCHAR(2000)

SELECT @SQL = '
 USE [?]
            INSERT INTO #tempFileInformation
            SELECT  
                DBNAME          =DB_NAME(),     
                [FILENAME]      =A.NAME,
                [TYPE]          = A.TYPE_DESC,
                FILEGROUPNAME   = fg.name,
                FILE_LOCATION   =a.PHYSICAL_NAME,
                FILESIZE_MB     = CONVERT(DECIMAL(10,2),A.SIZE/128.0),
                USEDSPACE_MB    = CONVERT(DECIMAL(10,2),(A.SIZE/128.0 - ((A.SIZE - CAST(FILEPROPERTY(A.NAME,''SPACEUSED'') AS INT))/128.0))),
                FREESPACE_MB    = CONVERT(DECIMAL(10,2),(A.SIZE/128.0 -  CAST(FILEPROPERTY(A.NAME,''SPACEUSED'') AS INT)/128.0)),
                AUTOGROW_STATUS = ''BY '' +CASE is_percent_growth when 0 then cast (growth/128 as varchar(10))+ '' MB - ''
                                                                  when 1 then cast (growth as varchar(10)) + ''% - '' ELSE '''' END
                                                                  + CASE MAX_SIZE WHEN 0 THEN '' DISABLED '' 
                                                                                  WHEN -1 THEN '' UNRESTRICTED''
                                                                                  ELSE '' RESTRICTED TO '' + CAST(MAX_SIZE/(128*1024) AS VARCHAR(10)) + '' GB '' END
                                                                + CASE IS_PERCENT_GROWTH WHEn 1 then '' [autogrowth by percent]'' else '''' end
    from sys.database_files A
    left join sys.filegroups fg on a.data_space_id = fg.data_space_id
    order by A.type desc,A.name
    ;
    '

    --print @sql

    EXEC sp_MSforeachdb @SQL
    go

    SELECT dbSize.*,fg.*,d.log_reuse_wait_desc,d.recovery_model_desc
    FROM #tempFileInformation fg
    LEFT JOIN sys.databases d on fg.DBNAME = d.name
    CROSS APPLY
    (
        select dbname,
                sum(FILESIZE_MB) as [totalDBSize_MB],
                sum(FREESPACE_MB) as [DB_Free_Space_Size_MB],
                sum(USEDSPACE_MB) as [DB_Used_Space_Size_MB]
            from #tempFileInformation
            where  dbname = fg.dbname
            group by dbname
    )dbSize


go
DROP TABLE #tempFileInformation