Before using MultiConnect, ensure that the default port configuration is appropriate for your environment. The port used by MultiConnect is:
To enable Secure Connect on a Windows client
To enable MultiConnect on a Linux client
echo 'export REMOTE_CLNT_MAX_CONNS=<4|8|16>' >> /etc/profile
To enable MultiConnect between QoreStor servers
echo 'export REPL_CLNT_MAX_CONNS=16' >> /etc/oca/oca.cfg
Rapid NFS and Rapid CIFS enable write operation acceleration on clients that use NFS and CIFS file system protocols. Similar to OST and RDS, these accelerators allow for better coordination and integration between QoreStor backup, restore, and optimized duplication operations with Data Management Applications (DMAs) such as CommVault, EMC Networker, and Tivoli Storage Manager. For the current list of supported DMAs, see the QoreStor Interoperability Guide.
Rapid NFS is a new client file system type that ensures that only unique data is written to QoreStor. It uses user space components and file system in user space (FUSE) to accomplish this. Metadata operations such as file creates and permission changes go through the standard NFS protocol, whereas write operations go through Rapid NFS.
Rapid CIFS is a Windows-certified filter driver that also ensures that only unique data is written to QoreStor. All chunking and hash computations are done at the client level.
NOTE: The supported DMAs listed in the QoreStor Interoperability Guide are the DMAs that have been tested and qualified with Rapid NFS and Rapid CIFS. You can use Rapid NFS and Rapid CIFS with other DMAs (such as Veritas products), but those products have not been tested and qualified with Rapid NFS or Rapid CIFS.
When Rapid NFS and Rapid CIFS are used with QoreStor they offer the following benefits:
This topic introduces some recommended best practices for using Rapid NFS operations with QoreStor.
RDA containers cannot use Rapid NFS. If you have existing NFS/CIFS containers, you do not need to create new containers to use Rapid NFS; you can install the plug-in (driver) to existing clients.
For example, if you wanted to set the CommVault marker (cv):
mount -t rdnfs 10.222.322.190:/containers/backup /mnt/backup -o marker=cv
Mount command usage:
rdnfs [nfs mount point] [roach mount point] -o marker=[marker]
nfs mount point = Already mounted nfs mountpoint
roach mount point = A new mount point
marker = appassure, arcserve, auto, cv, dump, hdm, hpdp, nw, or tsm
Rapid NFS is available on a QoreStor system and a client with a minimum of 4 CPU cores running at a minimum of 4 GHz cumulative processing power and 2 GB memory. Kernels must be 2.6.14 or later. For a list of supported operating systems, see the QoreStor Interoperability Guide. If you update your operating system, you must update your Rapid NFS plug-in as well. Updates are available on the Quest Support site.
If the QoreStor system goes down, the connection will terminate. DMAs will restart from the last checkpoint.
If Rapid NFS mode fails for any reason, QoreStor falls back to regular NFS mode automatically. For details, see Monitoring Performance.
When using Rapid NFS on your client, Quest recommends that you do not run other protocols to the QoreStor system in parallel, as this will adversely affect your overall performance.
File write locks across clients
NOTE: If the client and server do not have the same times, the times seen will not match typical NFS behavior due to the nature of file system in user space (FUSE).