Seagate ST39175LW Instrukcja Naprawy Pobierz pdf (Strona 21)

Chapter 1, Introduction 7

Terminology

Snapshot mirror

An exact copy of a primary volume at a particular moment, reproduced on a physically

separate device. Snapshot mirrors are created by the VERITAS Volume Manager (VxVM).

Standard device

Refers to the primary disk in an EMC primary-mirror disk array (see primary disk).

Third-Party Copy Device

This term has two meanings:

◆ A backup agent on the SAN that operates on behalf of backup applications. The

third-party copy device receives backup data from a disk attached to Fibre Channel and

sends it to a storage device, using the SCSI Extended Copy command. The third-party

copy device is sometimes called a copy manager, third-party copy engine, or data

mover. In SAN hardware configurations, a third-party copy device can be

implemented as part of a bridge, router, or storage device. The third-party copy

device may or may not be the device to which the storage units are connected.

◆ An offhost backup method in NetBackup ServerFree Agent that allows backups to be

made by means of a backup agent on the SAN.

TimeFinder

One of three frozen image methods included in the Extended Frozen Image Services

(Array Integration) option. TimeFinder is for making frozen images of client data on EMC

Symmetrix disk arrays.

ufs file system

This is the UNIX File System (ufs), which is the default file system type on Sun Solaris.

The ufs file system was formerly the Berkeley Fast File System.

VxMS (VERITAS Federated Mapping Services)

A library of routines (methods) used by NetBackup ServerFree Agent to obtain the

physical addresses of logical disk objects such as files and volumes.

Vol ume

A virtual device configured over raw physical disk devices (not to be confused with a

NetBackup Media Manager volume). Consists of a block and character device.

If a frozen image source exists over a volume, NetBackup 4.5 automatically uses a volume

mapping method to map the volume to physical device addresses. Any of the ServerFree

Agent frozen image methods can be used when backing up client data configured over

volumes.

For NetBackup 4.5, volumes must be created by means of the VERITAS Volume Manager

(VxVM).

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 181 182

Brak uwag

Seagate ST39175LW Instrukcja Naprawy Strona 21