There is no 'recommended path' other than a 'network share'. Same recommendations for Unix/Linux master will apply here.

Extract from NBU Admin Guide: 

Specify the directory where the disaster recovery information is to be saved. Do not save the

disaster recovery information to the local computer. Symantec recommends that you save the image file to a network share or a removable device.

The share must be established and available before the hot catalog backup runs.

Specify an NFS share or a UNC path (CIFS Windows share).

When indicating a UNC path, note the following:

■ A Windows master server can indicate a UNC path to a Windows computer.

■ A UNIX master server cannot indicate a UNC path to a Windows computer.

■ A UNIX master server cannot indicate a UNC path to a UNIX machine. To do so, first mount that UNC location on the master server, and then provide theUNC path to the UNIX machine.

The path for the disaster recovery information cannot be to a directory that is on the same partition as /usr/openv/netbackup. If the path is to a location on the same partition as /usr/openv/netbackup, NetBackup displays a status 20 error message. The message states that the disk path is invalid. Change the path on the Disaster Recovery tab to a directory on a different partition.

thanks for you responce.the general information here are clear but you know that the appliance that acting as master server should be managed by any other client because it not working directly with the admin console,but every thing is working inside the appliance so as I understand : firstly, share option should be opended in  the appliance then as my client is linux and it working with NFS only ,so on this client we have to mount NFS share directory in the client.(ofcourse it should be created before) please correct me if wrong!!

Regards,

The Appliance is a Linux server. You can login to it same as any Linux server (use something like putty).
Management is exactly the same as any other NBU master/media server on Linux - use Java or Windows Admin Console on your desktop to manage the server.

NFS share can be mounted on the Appliance at OS level.

PS: have you attended training for NetBackup Appliances? Couple of extra steps to get to root prompt (#), but 100% possible.

I'm looking at mountpoints on our demo unit:

Yes I attended  atraining for 5020 and 5220 appliances and both of them contains SUSE os and they have different shell but it is simple to use.

no problem with using the appliance and also i have a lab for testing .i believe that nfs and cifs possible for network sharing through unix and windows but i confused if there are better way to create path for disaster recovery when using appliances.or it has different way for disaster path.need best practice

Thanks

The share you have opened in your screenshot is the software share which is used for uploading patches to the appliance only - you should not use that for anything else so i would reccomend doing a "share close" on it before continuing

I would have thought a UNC path would suffice without having to mount a file system onto the appliance

The DR Section allows you to put in the appropriate credentials for tht UNC path - so just setup a share on a server somewhere (preferably off site but with good network connection) and use a UNC path to that share and the appropriate credentials

Hope this helps

A check shows that mail is enabled via the Main - Settings - Email section

The SMTP Add adds your smtp server to use

You can also add in your e-mail address to use

I have the feeling that this is also accessed in the GUI and what you need is to ensure it is setup for the "Software Admin" as that is the one used for the Catalog DR

See page 49 and prior of the 52xx Admin Guide for more info

thanks Mark for your support but I still have a confuse because i'm new in appliances. As i know that open share inside the appliance giving me ability to use the software preinstalled in the appliance to push netbackup software to unix clients or windows clients as it contain installation files please correct me if i,m wrong.

"UNC path would suffice without having to mount a file system onto the appliance" dou you mean simple create a directory in the root path of appliance as (/root/disasterrecovery) or by create a sharefolder in one of the server in the network and when configure the path in catalog policy i have to add \\server\share\

regarding SMTP I think this is very important to add email adress to use and i know that it may be configured through GUI ADMINCONSOLE

Thanks

please be patient for my questions that may be simple for the experts such you