Data protection issues
If you use data protection products that include Snapshot technology (such as
SnapRestore, SnapVault, SnapMirror, and SnapManager), you might have to
familiarize yourself with relevant data protection issues.
For more information about these issues, see the Data ONTAP 8.0 7-Mode Data
Protection Online Backup and Recovery Guide and the Data ONTAP 8.0 7-Mode
Data Protection Tape Backup and Recovery Guide.
v “Tape devices behind DataFort are not detected unless a known SCSI device
is mapped to LUN 0”
v “Tape backup and volume move operations must not be performed
simultaneously” on page 107
v “SMTape restore to an offline volume overwrites the data on that volume”
on page 107
v “Deleted files occupy additional space on SMTape restored volumes” on
page 107
v “Limitations when using SnapVault with non-default vFiler units” on page
107
v “Restore engine does not honor any mandatory or advisory locks on files”
on page 108
v “Restore operation to a non-existent volume restores data to the root
volume” on page 109
v “Suboptimal space savings with deduplication when 16-GB Performance
Acceleration Module is installed” on page 109
v “If you use DataFabric Manager server to manage SnapMirror or SnapVault
relationships between vFiler units” on page 109
Tape devices behind DataFort are not detected unless a known SCSI
device is mapped to LUN 0
If a known SCSI device is not mapped to LUN 0 when using a DataFort
appliance, the tape drives and media changers behind the DataFort appliance
are not detected.
To avoid this issue, you must ensure that the following actions have been
performed:
v When configuring a tape library, you must assign LUN 0 to SCSI devices
such as, tape drives, media changers, and SCC devices for them to be
detected and accessed by the storage system.
v When connecting a tape library through a DataFort appliance, the tape
drive, media changer, or SCC device assigned to LUN 0 must also be
mapped to a DataFort Cryptainer. This enables the storage system to detect
LUN 0 and also the SCSI devices attached to it.
106 IBM System Storage N series: Data ONTAP 8.0.4 7-Mode Release Notes
To Next Page
Loading...
Need help?
General