Excessive pending CIFS authentication requests can cause service
disruption
If domain controllers become unavailable to a vFiler unit, pending CIFS
authentication requests accumulate on the storage system. If the issue is not
resolved, this can prevent other vFiler units on the storage system from
successfully completing CIFS authentication requests.
Because a vFiler unit shares system resources with other vFiler units that are
on the storage system, pending CIFS authentication requests for a vFiler unit
could affect resources available to other vFiler units.
Data ONTAP enables you to monitor pending CIFS authentication requests
and take corrective action if needed. It generates SNMP traps in the following
situations:
v The amount of pending CIFS authentication requests reaches 50 percent of
total possible requests
v The pending authentication requests drop down under 10 percent, meaning
within a normal range again
For information about SNMP, see the Data ONTAP 8.0 7-Mode Network
Management Guide.
Client notification messages in Windows domains require NetBIOS
The Windows client notification feature used for client messaging, shutdown
notices, and vscan alerts requires NetBIOS over TCP to be enabled in Data
ONTAP.
Similarly, NetBIOS over TCP must be enabled on Windows clients and the
Windows Messenger service must be running.
By default, the Windows Messenger service is disabled on Windows 2003 and
Windows XP SP2 clients.
Configuration issue for clients that mount NFS shares using a
non-reserved port
The nfs.mount_rootonly option must be set to off on a storage system that
must support clients that mount NFS shares using a non-reserved port even
when the user is logged in as root. Such clients include Hummingbird clients
and Solaris NFS/IPv6 clients.
If the nfs.mount_rootonly option is set to on, Data ONTAP does not allow
NFS clients that use nonreserved ports (that is, ports with numbers higher
than 1023) to mount the NFS shares.
102 IBM System Storage N series: Data ONTAP 8.0.4 7-Mode Release Notes
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