Quantum DLT 4700 Instalační příručka stáhnout pdf (Strana 54)

Configuring Your IP4700 Device for Use with Backup Software

Best Practices

This section lists some recommended practices for backup; they

apply to various systems, including Windows and UNIX systems as

well as the IP4700 system. The following are general practices that we

recommend:

• When connecting a tape library, do not reserve a SCSI channel for

the autochanger device. Since the autochanger receives much less

data than the tape drives, put the autochanger on the first SCSI

bus, along with that SCSI bus’ tape drives.

• Put no more than two DLT 7000 HVD devices on a single SCSI

bus. The bus runs at a maximum rate of 20 Mbytes per second,

and each DLT 7000 can write at considerably more than the

drive’s rate of 5 Mbytes.

Automatic

Synchronization

Since backup software depends on accurate and consistent system

times on the backup client and backup servers, we recommend that

you run automatic time synchronization software on every system.

Platform-specific information follows:

• The standard time synchronization protocols are Network

Time Protocol (NTP) and Simple Network Time Protocol

(SNTP).

• Windows 2000, Windows NT, and UNIX operating systems

use SNTP.

• Windows operating systems can have their times set from

another Windows system, with member servers getting their

time from the primary domain controller (PDC) server.

• Time servers exist in a hierarchy; a few systems should pull

their time automatically from a time server on the Internet,

and all other systems pull their time from these systems.

• You will enable automatic time synchronization on Solaris

systems using the xntpd program.

Backing Up Over

the Network

This section provides some tips for backing up over a private

network.

Using a Private

Network

If you are performing backups over a network, we recommend that

you use a private network dedicated to backups. This provides the

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Quantum DLT 4700 Instalační příručka Strana 54