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17.5.2 Initiator group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
17.5.3 Mapping LUNs for Windows clusters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
17.5.4 Adding iSCSI targets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
17.5.5 Accessing LUNs on hosts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Chapter 18. Boot from SAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
18.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
18.2 Configuring SAN boot for IBM System x servers . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
18.2.1 Configuration limits and preferred configurations . . . . . . . . . . . . . . . . . . . . . . . 239
18.2.2 Preferred practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
18.2.3 Basics of the boot process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
18.2.4 Configuring SAN booting before installing Windows or Linux systems. . . . . . . 243
18.2.5 Windows 2003 Enterprise SP2 installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
18.2.6 Windows 2008 Enterprise installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
18.2.7 Red Hat Enterprise Linux 5.2 installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
18.3 Boot from SAN and other protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
18.3.1 Boot from iSCSI SAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
18.3.2 Boot from FCoE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Chapter 19. Host multipathing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
19.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
19.2 Multipathing software options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
19.2.1 Third-party multipathing solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
19.2.2 Native multipathing solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
19.2.3 Asymmetric Logical Unit Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
19.2.4 Why ALUA? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Part 4. Performing upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Chapter 20. Designing for nondisruptive upgrades. . . . . . . . . . . . . . . . . . . . . . . . . . . 281
20.1 System NDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
20.1.1 Types of system NDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
20.1.2 Supported Data ONTAP upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283
20.1.3 System NDU hardware requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
20.1.4 System NDU software requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
20.1.5 Prerequisites for a system NDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
20.1.6 Steps for major version upgrades NDU in NAS and SAN environments . . . . . 287
20.1.7 System commands compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
20.2 Shelf firmware NDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
20.2.1 Types of shelf controller module firmware NDUs supported. . . . . . . . . . . . . . . 289
20.2.2 Upgrading the shelf firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
20.2.3 Upgrading the AT-FCX shelf firmware on live systems. . . . . . . . . . . . . . . . . . . 289
20.2.4 Upgrading the AT-FCX shelf firmware during system reboot . . . . . . . . . . . . . . 290
20.3 Disk firmware NDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
20.3.1 Overview of disk firmware NDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
20.3.2 Upgrading the disk firmware non-disruptively . . . . . . . . . . . . . . . . . . . . . . . . . . 291
20.4 ACP firmware NDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
20.4.1 Upgrading ACP firmware non-disruptively . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
20.4.2 Upgrading ACP firmware manually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
20.5 RLM firmware NDU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Chapter 21. Hardware and software upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
21.1 Hardware upgrades. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
21.1.1 Connecting a new disk shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Summary of Contents for N Series
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