How to Pass the Netapp NS0-155 Exam: Comprehensive Data ONTAP 7-Mode Administrator Guide and Tips

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

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

Using the -p option may reduce the extra storage requirements in a flexible volume when reallocation is run on a volume with snapshots. It may also reduce the amount of data that needs to be transmitted by SnapMirror on its next update after reallocation is performed on a SnapMirror source volume.

http://www.netapp.com/us/system/pdf-reader.aspx?m=ds-3177-0512.pdf &cc=us

http://www.netapp.com/us/products/platform-os/flashpool.aspx

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.

http://www.netapp.com/us/system/pdf-reader.aspx?m=tr-3740.pdf &cc=us

SMB 2.0 support was included in Data OnTap 8.1.

Volume SnapMirror Interoperability Matrix.

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

lun set reservation lun_path [ enable | disable ]

Enables or disables the space reservation on the LUN. If no arguments are supplied after the lun_path, then the space reservation status of the given lun_path is displayed.

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

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.

lun map [ -f ] lun_path initiator_group [ lun_id ]

Maps a LUN to all the initiators in the supplied group. If a LUN ID is not specified, the smallest number that can be used for the various initiators in the group is automatically picked. Note that this command can be used multiple times to configure multiple maps for a LUN, or for an initiator group. Once created, you can use lun show -m to list all the LUN mappings.

The optional -f argument disables checking with the HA partner for LUN mapping conflicts.

https://library.netapp.com/ecmdocs/ECMP1120690/html/frameset.html

Changes to deduplication in 8.1 7-mode

Starting with Data ONTAP 8.1, you can enable the deduplication feature without adding a license. For

deduplication, no limit is imposed on the supported maximum volume size. The maximum volume size limit is determined by the type of storage system regardless of whether deduplication is enabled.

The rules for the selection of disks or array LUNs, for using as mirrored aggregates, are as follows:

Disks or array LUNs selected for each plex must be in different pools.

The same number of disks or array LUNs must be in both the plexes.

Disks are selected first on the basis of equivalent bytes per sector (bps) size, then on the basis of the size of the disk.

If there is no equivalent-sized disk, Data ONTAP uses a larger-capacity disk, and limits the size to make it identically sized.

Data ONTAP names the plexes of the mirrored aggregate.

https://library.netapp.com/ecmdocs/ECMP1196991/html/GUID-F5F241AF-50C0-4FF3-8C01-96958581C4D9.html

When you rejoin split aggregates, Data ONTAP mirrors the data from one aggregate to the other and destroys data that existed on that aggregate before the rejoin.

https://library.netapp.com/ecmdocs/ECMP1196991/html/GUID-B9CB3DA8-E1AF-4BAC-A85B-64C009010F4A.html