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

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

http://www.netapp.com/us/products/storage-systems/flash-cache/index.aspx?ref_source=ntp141p359372brg-c-26967a63-442e-c7e9-6a73-00002efa4dd6 &gclid=CLLdsqWKrbkCFS4aOgodb1AAuA

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

Flash Accel is a host-attached caching solution.

Flash Pool utilizes SSDs to enhance performance of disk aggregates (implicitly not controller-wide).

Flash Disk and Flash IO are ambiguous terms.

http://www.wafl.co.uk/cf/

http://wafl.co.uk/options/

Negotiated failover is a general facility which supports negotiated failover on the basis of decisions made by various modules.

cf.takeover.on_disk_shelf_miscompare

This option allows negotiated takeover to be enabled when the cluster nodes detect a mismatch in disk shelf count. By default, this option is set to off.

This option is available only when cluster is licensed and changing the value on one filer automatically changes the value on the partner filer.

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.

http://en.wikipedia.org/wiki/Logical_Unit_Number_masking

Logical Unit Number Masking or LUN masking is an authorization process that makes a Logical Unit Number available to some hosts and unavailable to other hosts.

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

nfs.per_client_stats.enable

Enables/disables the collection and display of perclient NFS statistics, as described in na_nfsstat(1). Valid values for this option are on or off. The default value for this option is off.

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

The snapvault subcommands are:

start [ -r ] [ -k n ] [ -t n ] [ -w ] [-p {inet | inet6 unspec}] [ -o options ]

[ -S [primary_filer:]primary_path ] secondary_qtree

modify [ -k n ] [ -t n ] [-p {inet | inet6 | unspec}] [ -o options ] [ -S

primary_filer:primary_path ] sec_ondary_qtree

The -k option sets the maximum speed at which data is transferred in kilobytes per second. It is used to throttle disk, CPU, and network usage. If this option is not set, the filer transmits data as fast as it can. The setting applies to the initial transfer as well as subsequent update transfers from the primary.

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.

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.