Strange Issue with TL Backups

Hi,
I am using SQL Litespeed for taking backups. I am facing one strange issue with the physical_device_name column values in msdb.dbo.backupmediafamily table.
In one of the SQL Servers (version is SQL 2005 SP2), I am taking are 3 transaction log backups generated in sequence from one of the database generated with media_set_id (from msdb.dbo.backupset) as 82945,82955,82968.
In order to see the physical_device_name of the backups, I executed the following:
select media_set_id, physical_device_name
from msdb.dbo.backupmediafamily
where media_set_id in (82945,82955,82968)
order by media_set_idoutput is as follows:
media_set_id physical_device_name82945 \BOMDBEDBPV001MSSQL_DBATranlogsIND_VDI_PRDIND_VDI_PRD_tlog_20091214_1600_LSP.bak82955 VDI_634CF06E-83F8-4A6D-8CAE-0A12E379FD93_0
82955 VDI_634CF06E-83F8-4A6D-8CAE-0A12E379FD93_182968 \BOMDBEDBPV001MSSQL_DBATranlogsIND_VDI_PRDIND_VDI_PRD_tlog_20091214_1630_LSP.bak
I am not getting what is VDI_634CF06E-83F8-4A6D-8CAE-0A12E379FD93_0 and VDI_634CF06E-83F8-4A6D-8CAE-0A12E379FD93_1. For media_set_id 82945 and 82968, the physical_device_name is a path of fille, then why is there a different type of value shown for 82955 when the script is same and both the backups are taken using SQL Litespeed.
Regards,
Chetan