Administrator Guide

Figure 47. Antivirus Scanning
Only storage administrators can recover an uninfected version of the le, or access and process the infected le. To gain access to an
infected le, you must connect to the SMB share through another SMB share on which the antivirus service is disabled. Otherwise, the
FluidFS cluster recognizes the le as infected, and denies access. You can also access the le through an NFS export, because NFS does
not support antivirus scanning.
File transfers between the FluidFS cluster and the anti-virus server are not encrypted, so communication should be protected or restricted.
Supported Antivirus Applications
For the latest list of supported antivirus applications, see the Dell Fluid File System Support Matrix.
Conguring Antivirus Scanning
To perform antivirus scanning, you must add an antivirus server and then enable antivirus scanning for each SMB share.
NOTE
: If any of the external services are congured with IPv6 link-local addresses, the monitor will always show these services
as Unavailable.
Managing Snapshots
Snapshots are read-only, point-in-time copies of NAS volume data. Storage administrators can restore a NAS volume from a snapshot if
needed. In addition, clients can easily retrieve les in a snapshot, without storage administrator intervention.
Snapshots use a redirect-on-write method to track NAS volume changes. That is, snapshots are based on a change set. When the rst
snapshot of a NAS volume is created, all snapshots created after the baseline snapshot contain changes from the previous snapshot.
Various policies can be set for creating a snapshot, including when a snapshot is to be taken and how long to keep snapshots. For example,
mission-critical les with high churn rates might need to be backed up every 30 minutes, whereas archival shares might only need to be
backed up daily.
If you congure a NAS volume to use VM-consistent snapshots, each snapshot creation operation such as scheduled, manual, replication,
or NDMP automatically creates a snapshot on the VMware server. This feature enables you to restore the VMs to the state they were in
before the NAS volume snapshot was taken.
Because snapshots consume space on the NAS volume, ensure that you monitor available capacity on the NAS volume and schedule and
retain snapshots in a manner that ensures that the NAS volume always has sucient free space available for both user data and snapshots.
Also, to be informed when snapshots are consuming signicant NAS volume space, enable a snapshot consumption alert.
The FluidFS cluster automatically deletes one or more snapshots for a NAS volume in the following cases:
• If you delete a NAS volume, the FluidFS cluster deletes all of the snapshots for the NAS volume.
• If you restore a NAS volume from a snapshot, the FluidFS cluster deletes all the snapshots created after the snapshot from which you
restored the NAS volume.
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FluidFS Administration