Pass the Netapp NetApp Certified Data Administrator NS0-155 Questions and answers with ExamsMirror

Both ‘warn you that there are no available spares from the proper pool’ and ‘halt after 24 hours if spare disk are not added to the proper pool’ are correct answers. However, since Data ONTAP alerts you first, 'warn you that there are no available spares' is the best answer.

https://library.netapp.com/ecm/ecm_download_file/ECMP1196912

You can cable a maximum of two disk shelves on each loop

https://library.netapp.com/ecm/ecm_download_file/ECMP1210206

Startup commands for your storage system are stored in the /etc/rc file. The /etc/rc file contains commands that the storage system executes at boot time to configure the system.

Commands in the /etc/rc file configure the storage system to:

Communicate on your network

Use the NIS and DNS services

Save the core dump that might exist if the storage system panicked before it was booted

https://library.netapp.com/ecmdocs/ECMM1278265/html/sysadmin/accessing/concept/c_oc_accs_systemstartup-etc-rc-file.html#c_oc_accs_system-startup-etc-rc-file

https://library.netapp.com/ecmdocs/ECMP1196890/html/man1/na_aggr.1.html

aggr mirror aggrname

[ -f ]

[ -n ]

[ -v victim_aggrname ]

[ -d disk1 [ disk2 ... ] ]

Turns an unmirrored aggregate into a mirrored aggregate by adding a plex to it. The plex is either newlyformed from disks chosen from a spare pool, or, if the -v option is specified, is taken from another existing unmirrored aggregate. Aggregate aggrname must currently be unmirrored. Use aggr create to make a new, mirrored aggregate from scratch.

Disks may be specified explicitly using -d in the same way as with the aggr create and aggr add commands.

The number of disks indicated must match the number present on the existing aggregate. The disks specified are not permitted to span disk pools. This behavior can be overridden with the -f option. The -f option, in combination with -d, can also be used to force using disks that have a rotational speed that does not match that of the majority of existing disks in the aggregate.

If disks are not specified explicitly, then disks are automatically selected to match those in the aggregate's existing plex.

The -v option can be used to join victim_aggrname back into aggrname to form a mirrored aggregate. The result is a mirrored aggregate named aggrname which is otherwise identical to aggrname before the operation.

Victim_aggrname is effectively destroyed. Victim_aggrname must have been previously mirrored with

aggrname, and then separated via the aggr split command. Victim_aggrname must be offline. Combined with the -v option, the -f option can be used to join aggrname and victim_aggrname without prompting the user.

The -n option can be used to display the command that the system will execute without actually making any changes. This is useful for displaying the automatically selected disks, for example.

https://library.netapp.com/ecmdocs/ECMP1196991/html/GUID-06C70D3B-9A06-4D20-B140-EB147B941BDA.html

The data structures that are backed up and restored through SnapVault depend on the primary system.

On systems running Data ONTAP, the qtree is the basic unit of SnapVault backup and restore.

SnapVault backs up specified qtrees on the primary system to associated qtrees on the SnapVault secondary system. If necessary, data is restored from the secondary qtrees back to their associated primary qtrees.

On open systems storage platforms, the directory is the basic unit of SnapVault backup. SnapVault backs up specified directories from the native system to specified qtrees in the SnapVault secondary system.

If necessary SnapVault can restore an entire directory or a specified file to the open systems platform.

The destination system uses a slightly more disk space and directories than the source system.

snap restore [ -A | -V ] [ -f ] [ -t vol | file ] [ -s snapshot_name ]

[ -r restore_as_path ] vol_name | restore_from_path

See more at: http://wafl.co.uk/snap/#sthash.nJiEwxGV.dpuf

https://library.netapp.com/ecmdocs/ECMP1196890/html/man1/na_aggr.1.html

The following commands are available in the aggr suite:

If you use the -d disk1 [ disk2 ... ] argument, the node creates the aggregate with the specified spare disks disk1, disk2, and so on. You can specify a space-separated list of disk names. Two separate lists must be specified if the new aggregate is mirrored. In the case that the new aggregate is mirrored, the indicated disks must result in an equal number of disks on each new plex.

The disks in a plex are not permitted to span spare pools. This behavior can be overridden with the -f option.

The same option can also be used to force using disks that do not have matching rotational speed. The –f option has effect only when used with the -d option specifying disks to use.

The -m option can be used to specify that the new aggregate be mirrored (have two plexes) upon creation. If this option is given, then the indicated disks will be split across the two plexes. By default, the new aggregate will not be mirrored.

aggr mirror aggrname

The -n option can be used to display the command that the system will execute without actually making any changes. This is useful for displaying the automatically selected disks, for example.

If a scheduled transfer fails (for example, due to network failure), SnapMirror automatically retries the transfer the next minute.

http://hd.kvsconsulting.us/netappdoc/733docs/html/ontap/onlinebk/GUID-511EAA86-069A-42E8-B62E-3168C7F0A83D.html