Back-up's keep failing with the following error. Any help would be appreciated..Thanks in advance.
OFO: Started for device: "\\EXCHANGE\E$"
Performing Remote Agent backup
Media Name: "Media created 4/27/2005 09:00:02 PM"
Backup of "\\EXCHANGE\E$ "
Backup set #2 on storage media #1
Backup set description: "All Network Servers
iff"
Backup Type: DIFFERENTIAL - Changed Files
Backup started on 4/27/2005 at 9:04:44 PM.
Backup completed on 4/27/2005 at 9:20:18 PM.
Backed up 599 files in 35 directories.
Processed 1,653,314,096 bytes in 15 minutes and 34 seconds.
Throughput rate: 101.3 MB/min
----------------------------------------------------------------------
Performing Remote Agent backup
Media Name: "Media created 4/27/2005 09:00:02 PM"
Backup of "\\EXCHANGE\Microsoft Exchange Directory "
Backup set #3 on storage media #1
Backup set description: "All Network Servers
iff"
Backup Type: DIFFERENTIAL - Logs
Backup started on 4/27/2005 at 9:20:26 PM.
Backup completed on 4/27/2005 at 9:20:41 PM.
Backed up 1 Exchange Server store(s)
Processed 20,971,904 bytes in 15 seconds.
Throughput rate: 80.0 MB/min
----------------------------------------------------------------------
Unable to attach to \\EXCHANGE\Microsoft Exchange Information Store.
NEWFS_EMS_NO_LOG_BKUP
^ ^ ^ ^ ^
Incremental and differential backups are not possible, because one or more of the Microsoft Exchange transaction log files has been deleted since the last backup.
^ ^ ^ ^ ^
OFO: Started for device: "\\FILES\E$"
OFO: Started for device: "\\EXCHANGE\E$"
Performing Remote Agent backup
Media Name: "Media created 4/27/2005 09:00:02 PM"
Backup of "\\EXCHANGE\E$ "
Backup set #2 on storage media #1
Backup set description: "All Network Servers

Backup Type: DIFFERENTIAL - Changed Files
Backup started on 4/27/2005 at 9:04:44 PM.
Backup completed on 4/27/2005 at 9:20:18 PM.
Backed up 599 files in 35 directories.
Processed 1,653,314,096 bytes in 15 minutes and 34 seconds.
Throughput rate: 101.3 MB/min
----------------------------------------------------------------------
Performing Remote Agent backup
Media Name: "Media created 4/27/2005 09:00:02 PM"
Backup of "\\EXCHANGE\Microsoft Exchange Directory "
Backup set #3 on storage media #1
Backup set description: "All Network Servers

Backup Type: DIFFERENTIAL - Logs
Backup started on 4/27/2005 at 9:20:26 PM.
Backup completed on 4/27/2005 at 9:20:41 PM.
Backed up 1 Exchange Server store(s)
Processed 20,971,904 bytes in 15 seconds.
Throughput rate: 80.0 MB/min
----------------------------------------------------------------------
Unable to attach to \\EXCHANGE\Microsoft Exchange Information Store.
NEWFS_EMS_NO_LOG_BKUP
^ ^ ^ ^ ^
Incremental and differential backups are not possible, because one or more of the Microsoft Exchange transaction log files has been deleted since the last backup.
^ ^ ^ ^ ^
OFO: Started for device: "\\FILES\E$"