Seagate ST3390N Guide d'installation Page 363

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Hardware maintenance 18-25
Disk unit replacement—shadowed system
Standard 1.0 Modular Option EC Installation and Maintenance Guide November 1999
Upgrade unshadowed
systems to shadowed
systems
A 4-node shadowed system can be installed in two modules.
A five-node shadowed system can be installed in three
modules.
When you install a 3-, 4-, or 5-node unshadowed system, and
plan to expand to its equivalent shadowed system in the
future, install the initial hardware configuration as if it were a
shadowed system (that is, card placement, cabling, and
backplane switch settings). Since this is an unshadowed
system, the second disk unit is not installed.
5 Is the replacement disk drive of equal or greater capacity?
6 Reboot the system (if you have not already done so).
7 Enable disk shadowing.
Step Action
IF the replacement disk
drive is of THEN
equal capacity perform a restore from
backup.
See Chapter 6, “Restore
system from backup,” in
the
System Installation
and Modification Guide
(NTP 555-7001-215).
greater capacity perform a restore from
backup, and then run the
Hardware modify.
See Chapter 3,
“Comprehensive upgrade,”
in the
System Installation
and Modification Guide
(NTP 555-7001-215).
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