Adaptec AHA-2742-T User Manual download pdf

1 BackupEDGE - OSR5 BTLD Support

Microlite Corporation

2315 Mill Street

Aliquippa PA 15001-2228 USA

Tel: 724-375-6711

Fax: 724-375-6908

email:[email protected]

web: www.microlite.com

RecoverEDGE BTLD Support

BackupEDGE 01.01.08 Build 6 and later

RecoverEDGE 02.01.07 and later

This document is needed for proper use of BTLDs during bare metal

disaster recovery, and should be kept near the RecoverEDGE media. A

copy is also posted for reference on the Microlite Corporation web site:

http://www.microlite.com

Introduction

BTLDs (Boot-Time Loadable Drivers) allow a user to switch SCSI host

adapters during a crash recovery. This is especially important for

systems for which the host adapter being used before a system crash is

no longer available.

Note that if you are switching host adapters as part of a planned

upgrade, it is faster and easier to build a kernel with the proper host

adapter driver and place it on your RecoverEDGE media than it is to

use a BTLD. And there are caveats to using BTLDs which will be

explained later in this document.

Theory of Operation

OpenServer 5 generally requires all drivers for a particular device to be

linked into the kernel (/unix) before the device will operate. Most

important for disaster recovery are the adapters that control the hard

drives and the storage devices.

The best kernel to use with RecoverEDGE is generally the current

system kernel, which contains drivers for all the currently used storage

devices, plus drivers for networking and modem support.

Installation kernels and “safe” kernels generally do not support

multiple host adapters, and networking, which make them unsuitable

for disaster recovery on anything but a basic system.

RecoverEDGE with BTLD support allows you to use your current system

kernel, with all of its device drivers, for local or remote crash recovery,

plus switch hosts adapters if necessary.

What are the Caveats?

The traditional way of supporting BTLDs on crash recovery media was

simply to place an un-stripped system or install kernel on the boot

media, along with the “link” program.

There are many disadvantages here...

• RecoverEDGE supports network disaster recovery, and recovery

on systems with host adapters. These can’t be done with the

install kernel.

RecoverEDGE™

supports host adapter

switching during

disaster recovery on

Xinuos

SCO OpenServer

5.0.5-5.0.7/5.0.7V.

1 2 3 4 5 6 7

Summary of Contents

Page 1 - RecoverEDGE BTLD Support

1 BackupEDGE - OSR5 BTLD SupportMicrolite Corporation2315 Mill StreetAliquippa PA 15001-2228 USATel: 724-375-6711Fax: 724-375-6908email:sales@microlit

Page 2 - Testing Boot Media (Normal)

2 of 7 BackupEDGE - OSR5 BTLD SupportMicrolite Corporation2315 Mill StreetAliquippa PA 15001-2228 USATel: 724-375-6711Fax: 724-375-6908email:sales@mi

Page 3 - Constructing Boot Strings

3 of 7 BackupEDGE - OSR5 BTLD SupportMicrolite Corporation2315 Mill StreetAliquippa PA 15001-2228 USATel: 724-375-6711Fax: 724-375-6908email:sales@mi

Page 4 - Testing Boot Media (BTLD)

4 of 7 BackupEDGE - OSR5 BTLD SupportMicrolite Corporation2315 Mill StreetAliquippa PA 15001-2228 USATel: 724-375-6711Fax: 724-375-6908email:sales@mi

Page 5

5 of 7 BackupEDGE - OSR5 BTLD SupportMicrolite Corporation2315 Mill StreetAliquippa PA 15001-2228 USATel: 724-375-6711Fax: 724-375-6908email:sales@mi

Page 6

6 of 7 BackupEDGE - OSR5 BTLD SupportMicrolite Corporation2315 Mill StreetAliquippa PA 15001-2228 USATel: 724-375-6711Fax: 724-375-6908email:sales@mi

Page 7

7 of 7 BackupEDGE - OSR5 BTLD SupportMicrolite Corporation2315 Mill StreetAliquippa PA 15001-2228 USATel: 724-375-6711Fax: 724-375-6908email:sales@mi

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Adaptec AHA-2742-T User Manual

Browse online or download User Manual for NAS & storage servers Adaptec AHA-2742-T. RecoverEDGE OpenServer 5 BTLD Support

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