Netapp NS0-155 Data ONTAP 7-Mode Administrator Exam Practice Test

You can export any file path. Implicitly file paths are filesystem objects. You can export a directory, a qtree, a volume or even a file.

ifstat -a provides detailed statistics (multiple pages) about all network interfaces.

netstat -i provides a list of connections and open network sockets (listeners).

netdiag -n will perform a diagnostic but does not provide detailed statistics about networking.

sysstat 1 will provide performance statistics but not detailed statistics about networking.

Data compression requires 64-bit aggregates.

snapmirror initialize [ -S source ] [ -k kilobytes ] [ -s src_snap ] [ -c

create_dest_snap ] [ -w ] destination Starts an initial transfer over the network. An initial transfer is required before update transfers can take place.

The initialize command must be issued on the destination node. If the destination is a volume, it must be restricted (see na_vol(1) for information on how to examine and restrict volumes). If the destination is a qtree, it must not already exist (see na_qtree(1) for information on how to list qtrees). If a qtree already exists, it must be renamed or removed (using an NFS or CIFS client), or snapmirror initialize to that qtree will not work.

snapmirror resync [ -n ] [ -f ] [ -S source ] [ -k kilobytes ] [ -s src_snap ]

[ -c create_dest_snap ] [ -w ] destination Resynchronizes a broken-off destination to its former source, putting the destination in the snapmirrored state and making it ready for update transfers. The resync command must be issued on the destination node.

* Unix-like operating systems identify users within the kernel by an unsigned integer value called a user identifier, often abbreviated to UID or User ID. The range of UID values varies amongst different systems; at the very least, a UID represents a 15-bit integer, ranging between 0 and

The UID value references users in the /etc/passwd file. Shadow password files and Network Information Service also refer to numeric UIDs. The user identifier has become a necessary component of Unix file systems and processes.

* In POSIX-compliant environments the command-line command id gives the user's user identifier number as well as more information on the user account like the user name, primary user group and group identifier (GID).

* Files and directories are owned by a user. The owner determines the file's owner class. Distinct permissions apply to the owner.

Files and directories are assigned a group, which define the file's group class. Distinct permissions apply to members of the file's group members. The owner may be a member of the file's group.

Users who are not the owner, nor a member of the group, comprise a file's others class. Distinct permissions apply to others.

The effective permissions are determined based on the user's class. For example, the user who is the owner of the file will have the permissions given to the owner class regardless of the permissions assigned to the group class or others class.

wafl.default_security_style

Specifies the default security style assigned to a new volume. All qtrees created on the volume get this as their security style. Legal values for this option are `unix', `ntfs', or `mixed'. The default value for this option is `unix', unless the node is an NTFS-only node, in which case the default is `ntfs'.

Note: if cifs setup is run after setting wafl.default_security_style, the filer will become an NTFS security style filer.

snap restore [ -f ] [ -t vol | file ] [ -s snapshot_name ] [ -r restore_as_path ]

vol_name | restore_from_path

Reverts a volume to a specified Snapshot copy, or reverts a single file to a revision from a specified Snapshot copy.

Before reverting the volume or file, the user is requested to confirm the operation. The -f option suppresses this confirmation step.

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Flash Pool utilizes SSDs to enhance performance of disk aggregates.

Flash Cache is a controller-attached PCIe intelligent caching solution.

Flash Accel is a host-attached caching solution.

Flash Disk and Flash IO are ambiguous terms.

In OnTap 8.0, when NTFS security style is used, only Windows style security objects are used.

For CIFS clients, security is handled using Windows NTFS ACLs.

For NFS clients, the NFS UID (user id) is mapped to a Windows SID (security identifier) and its associated groups. Those mapped credentials are used to determine file access, based on the NFTS ACL.

The following commands are available in the lun suite:

Easy to use interactive mechanism for setting up initiator groups, LUNs, and mapping configuration.

IP addresses and wildcards can be used when specifying host targets in exports.

User names are not valid exports options, save for the anon option which utilizes a local system UID or user name (i.e. no user name mapping or resolution is performed.)

The highest level in the filesystem that can be specified for an export is the volume level. Implicitly this means that each volume must be exported separately.

An export provides access to paths below the export, implying that multiple paths on the same volume can be exported from an export.

sysstat reports aggregated filer performance statistics such as the current CPU utilization, the amount of network I/O, the amount of disk I/O, and the amount of tape I/O.

When you are using SnapVault in combination with Volume SnapMirror, it is important to understand their relationship with Snapshot. You cannot utilize SnapVault to protect a Volume SnapMirror destination, because SnapVault and SnapMirror both use the same Snapshot copies; they cannot run simultaneously. Schedules must be managed to accommodate the interlock that keeps SnapVault and SnapMirror from stepping on each other.

aggr destroy { aggrname | plexname } [ -f ]

Destroys the aggregate named aggrname, or the plex named plexname. Note that if the specified aggregate is tied to a traditional volume, then the traditional volume itself is destroyed as well.

If an aggregate is specified, all plexes in the aggregate are destroyed. The named aggregate must also not contain any flexible volumes, regardless of their mount state (online, restricted, or offline). If a plex is specified, the plex is destroyed, leaving an unmirrored aggregate or traditional volume containing the remaining plex.

Before destroying the aggregate, traditional volume or plex, the user is prompted to confirm the operation. The -f flag can be used to destroy an aggregate, traditional volume or plex without prompting the user.

The disks originally in the destroyed object become spare disks. Only offline aggregates, traditional volumes and plexes can be destroyed.

Add a new backup user to the Backup Operators useradmin group list. Enter the following command:

useradmin user add backupuser -g "Backup Operators"

Generate an NDMP password for the new user. Enter the following command:

ndmpd password backupuser

The NDMP password is used to authenticate the NetBackup media server to the storage system. This password is required for setup on the NetBackup management station.

Separating the disk and tape devices into separate zones prevents disk RSCNs from impacting tape devices, which tend to be more sensitive to RSCNs.

Best practice is to zone each initiator WWPN to each target WWPN individually.

This question implies that there is an issue with the clustering of the two controllers. Since this is the case you will want to run the cluster configuration checker to identify and resolve any issues.

Aggregates are never converted as part of an upgrade. An upgrade will not touch your data!

Think of ndmpcopy as a sort of ftp for SAN. You can use it to copy files from one volume to another. Because the file is read from one volume and written to another, the constraints of volume types are not an issue.

You cannot disable the SyncMirror license if mirrored aggregates exist and are online.

SyncMirror is essentially a RAID-1 mirror; hence the name. The best practice is to mirror storage of equal performance; i.e. identical RAID groups and disk sizes (number of spindles, IOPS). If you were to mirror two storage devices of different performance, the slower device would be the limiting factor.

You can use the snapmirror resync command to reestablish the connection between the source and the destination. This command is applied after the SnapMirror relationship between the source and destination is broken.

A volume SnapMirror relationship is not allowed between two SnapLock Compliance volumes if the destination volume has unexpired files.

snapmirror resume destination

Resumes transfers to destination. The snapmirror resume command can be used either to abort a

snapmirror quiesce in progress or undo a previously completed snapmirror quiesce. The command restores the state of the destination from quiescing or quiesced to whatever it was prior to the quiesce operation.