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

* 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.

https://library.netapp.com/ecmdocs/ECMP1196986/html/GUID-87340429-8F4A-4AA6-B081-0F5040089C78.html

Data compression requires 64-bit aggregates.

https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_lun.1.html

The usage for lun create is shown below. Options not in brackets are mandatory.

lun create -s size -t ostype [ -o noreserve ] [ -e space_alloc ] lun_path

This usage of the lun create command should be employed to create a new LUN of given size, with initially zero contents. The LUN is created at the lun_path given. No file should already exist at the given lun_path. The directory specified in the lun_path must be a qtree root directory.

The size is specified in bytes. Optionally, a number followed by a one-character multiplier suffix can be used: c (1), w (2), b (512), k (1024), m (k*k), g (k*m), t (m*m).

The size of the created LUN could be larger than the size specified, in order to get an integral number of cylinders while reporting the geometry using SAN protocols.

The size of the LUN actually created is reported if it is different from that specified in the command.

The mandatory ostype argument is one of: solaris (the LUN will be used to store a Solaris raw disk in a singleslice partition), windows (the LUN will be used to store a raw disk device in a single-partition Windows disk using the MBR (Master Boot Record) partitioning style), hpux (the LUN will be used to store HP-UX data), aix (the LUN will be used to store AIX data), vld (the LUN contains a SnapManager VLD), linux (the LUN will be used to store a Linux raw disk without any partition table), netware (the LUN will be used to store NetWare data), vmware (the LUN will be used to store VMware data), windows_gpt (the LUN will be used to store Windows data using the GPT (GUID Partition Type) partitioning style), windows_2008 (the LUN will be used to store Windows data for Windows 2008 systems), openvms (the LUN will be used to store Open-VMS data), xen (the LUN will be used to store Xen data), hyper_v (the LUN will be used to store Hyper-V data), solaris_efi (the LUN will be used to store Solaris_EFI data).

By default, the LUN is space-reserved. To manage space usage manually, -o noreserve can be specified.

Using this option will create a LUN without any space being reserved. Provisioning threshold events can be enabled by specifying -e space_alloc option. This option has to be used in conjunction with -o noreserve.

https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_options.1.html

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.

https://library.netapp.com/ecmdocs/ECMP1196890/html/man5/na_exports.5.html

The /etc/exports file contains a list of export entries for all file system paths that Data ONTAP exports automatically when NFS starts up.

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

http://backdrift.org/man/netapp/man1/na_netdiag.1.html

ifstat - display device-level statistics for network interfaces

netdiag - perform network diagnostics

Sadly, you cannot convert a LUN into a Vulcan Language Dictionary.

https://library.netapp.com/ecm/ecm_download_file/ECMM1278633

You must meet certain prerequisites before using SnapRestore:

- SnapRestore must be licensed on your storage system.

- There must be at least one Snapshot copy on the system that you can select to revert.

- The volume to be reverted must be online.

- The volume to be reverted must not be in use for data replication.

http://hd.kvsconsulting.us/netappdoc/733docs/html/ontap/onlinebk/GUID-A14081A3-9270-47EE-A1C1-EC52D3ABDBD0.html