User guide

Known problems and limitations
EMC Avamar 7.0 Release Notes 45
Novell NetWare client
The following table lists known problems for this release of the Avamar Client for NetWare.
Table 16 Novell NetWare client known problems
ID Description
30603 Pre-6.1 client incompatibilities with 6.1 and 7.0 servers
Beginning with version 6.1, Avamar servers use a strengthened FIPS 140-2 compliant
SSL/TLS protocol that is incompatible with earlier versions of the Avamar Client for
NetWare. In most cases, if an earlier version client attempts to connect to an Avamar
6.1 or 7.0 server, then the connection is rejected by the server.
This situation can be remedied by any of the following actions:
• Upgrade the Avamar Client for NetWare software to 6.1 or 7.0.
• Use unencrypted connections to communicate with the server.
• Use encrypted connections but disable FIPS mode on the server.
12641 Maximum backup size and number of files
For optimal performance, limit backups with the Avamar Client for NetWare to a
maximum total size of 500 GB and less than 1 million files.
Furthermore, for best results, limit the maximum hash cache size to 10 MB. This
behavior is controlled by the Maximum client hash cache size (MBs) plug-in option.
19822 Stunnel limitation
There is a known issue with STunnel.NLM in which 656 bytes of memory is allocated
but not released. The NetWare operating system reclaims this memory when STunnel
unloads.
N/A Using encryption significantly increases backup times
Using encryption during backup operations significantly increases the amount of time
required to perform a NetWare backup. Typically, the amount of time required to
perform the backup increases by 50% or more.
Because on-demand backups are always allowed to complete no matter how long they
take, there is little practical impact to on-demand backups. However, because
scheduled backups can only run as long as the schedule allows them to, if you use
High or Medium encryption settings in the datasets used to back up NetWare servers,
ensure that the time allotted by the schedule is long enough to complete these backup
operations.
N/A NSS compression should be suspended during backups
NSS volumes with compression enabled can cause memory contention issues during
backups. Therefore, you should suspend compression during backup operations. For
either on-demand or scheduled backups with Avamar Administrator, select the
Suspend NSS Compression backup option to suspend NSS compression during
backups and automatically resume NSS compression afterward.