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Chapter 5. Operation

Before you begin

Before powering on the enclosure system, ensure that all the modules are rmly seated in their correct

slots.

Verify that you have successfully completed the sequential “Installation Checklist” instructions in Table 4

on page 27. Once you have completed these steps, use ESS deployment tools (gssutils) to complete

the system setup.

Powering on/powering off

CAUTION: Do not operate the enclosure system until the ambient temperature is within the

specied operating range described in “Environmental requirements” on page 84. If the drive

modules have been recently installed, make sure they have had time to adjust to the

environmental conditions before they are used with production data for I/O.

1. Power on the system by connecting the power cables from the PSU to the PDU. See Figure 59 on page

52.

The System Power LED on the front panel should be lit green when the enclosure power is activated.

2. Power the system down by disconnecting the power cord from the power supply module.

When powering up, make sure to power up the enclosures and associated data host in the following

order:

• Drive enclosures rst

This ensures that the disks in the drive enclosure have enough time to completely spin up before being

scanned by the controller modules within the controller enclosure.

While enclosures power up, their LEDs blink. After the LEDs stop blinking—if no LEDs on the front, back

and top of the enclosure are amber—the power-on sequence is complete, and no faults have been

detected.

– See Overview of front panel LEDs and Figure 12 on page 15.

– See Overview of rear panel LEDs and gures/tables for rear panel CRUs.

– See Overview of top panel LEDs and gures/tables for top panel CRUs.

• Controller enclosure next if an RBOD is used. Not applicable to server attached JBOD conguration.

Depending upon the number and type of disks in the system, it may take several minutes for the system

to become ready.

• Data host last (if powered down for maintenance purposes).

Note: When powering off, you will reverse the order of steps used for powering on.

• Important: If main power is lost for any reason, upon restoration of power, the Enclosure will restart

automatically.

• Note: See “Front panel LEDs” on page 56 for details pertaining to front panel LEDs and related fault

conditions.

• Important: To avoid potential equipment damage during transport and subsequent loss of data, see

`Procedure: Transporting a 5U expansion enclosure. The procedure describes what to do for the

following situations:

IBM 106 User Manual

Questions and Answers: