In an active volume SnapMirror relationship, the size of the source and destination file systems is identical.

However, the size of the destination volume can be larger than or equal to the size of the source volume. The size of the file systems must be identical to allow the source to be restored from the destination.

https://library.netapp.com/ecmdocs/ECMP1196991/html/GUID-DE5EE692-81CF-4569-A703-00B4E283CE99.html

A baseline (aka " full " ) backup is always required before valid incremental backups can be made.

For a detailed breakdown of the procedure see the following KB

https://kb.netapp.com/support/index?page=content & id=1011576

Disks must be assigned to an aggregate to be used as raid group members or spares. Unassigned disks are displayed as " not owned " .

https://library.netapp.com/ecmdocs/ECMP1196991/html/GUID-D4D7C7F0-9063-4099-B5CA-8FEE619EEF1D.html

SyncMirror is a feature of Data OnTap used to mirror data to two separate aggregates. It allows for real-time mirroring of data to matching aggregates physically connected to the same storage system.

SyncMirror provides for synchronous mirroring of data, implemented at the RAID level. You can use SyncMirror to create aggregates that consist of two copies of the same WAFL file system. The two copies, known as plexes, are simultaneously updated. Therefore, the copies are always identical. The two plexes are directly connected to the same system.

The following provides information about the activities of SyncMirror:

SyncMirror can be used to mirror aggregates and traditional volumes. (A traditional volume is essentially an aggregate with a single volume that spans the entire aggregate.)

SyncMirror cannot be used to mirror FlexVol volumes. However, FlexVol volumes can be mirrored as part of an aggregate.

SyncMirror is different from synchronous SnapMirror.

* 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/ECMP1196979/html/man1/na_snapmirror.1.html

The root volume is always vol0 and etc is contained therein. When exporting the root volume via NFS, the path is/vol/vol0; so the full path to snapmirror log files is /vol/vol0/etc/log.

/etc/log/snapmirror.

This file logs SnapMirror activity. Log file for current week.

/etc/log/snapmirror.[0-5] SnapMirror log files for previous weeks.

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.

http://scst.sourceforge.net/mc_s.html

http://www.alacritech.com/legacypdf/iSCSI_Multiple_Connections.pdf

Meme: Remember the acronym: MCS or MC/S - Multiple Connections per Session. Microsoft Windows 2008 ' s MPIO driver supports MC/S.