ASE : Display Available Device Space - Free Disk Space

Determining the amount of free space on a server's set of devices
is not an easy task; the procedure below produces a nice report,
showing total allocations and available space on each device.
Thanks to Stephanie L for this example.


create procedure sp_freedisk
as

set nocount on

select
logical_name = substring(d.name, 1, 12),
physical_name = substring(d.phyname, 1, 17),
vdevno = d.low / power(2, 24),
size = (d.high - d.low + 1) * 2 / 1024,
reserved = isnull(sum(u.size) * 2 / 1024, 0),
left = (d.high - d.low + 1) * 2 / 1024 -
isnull(sum(u.size) * 2 / 1024, 0)
from
master.dbo.sysdevices d, master.dbo.sysusages u
where
d.status & 2 = 2
and u.vstart / power(2, 24)=*d.low / power(2, 24)
group by
substring(d.name, 1, 12),
substring(d.phyname, 1, 17),
d.low / power(2, 24),
(d.high - d.low + 1) * 2 / 1024
order by vdevno

return