Replacing A Storage Enclosure Chassis; Before You Begin; Verifying Component Failure; Preparing To Remove A Damaged Storage Enclosure Chassis - Seagate RealStor 5005 Series Hardware Installation

Replacing a storage enclosure chassis

The controller enclosure or expansion enclosure chassis replacement procedure replaces a damaged chassis CRU. The
procedure includes removing all CRU modules from a damaged chassis and installing them into a replacement chassis.
IMPORTANT: RealStor 5005/4005 Series enclosures using 2U12 or 2U24 chassis are described in
enclosure models" (page 73)
Whether your controller enclosure product is a 2U12 or 2U24 model, a fully functional replacement chassis requires the
successful removal and installation of the following components:
• All power and data cables
• All disk drive modules
• Two power cooling modules (both AC)
• Two IOMs of the same model type
This procedure references the CRU component procedures described elsewhere in this chapter.

Before you begin

CAUTION: Do not remove the enclosure until you have received the replacement enclosure.
See CAUTION bullets regarding electrostatic discharge and anti-static protection on
1. Schedule down time that will allow for shutdown; sixty minutes of replacement work; and restart.
2. Verify the existence of a known/good backup of the system.
3. Record system settings for future use and label all cables.
4. Prepare a suitable static-protected work environment to accommodate chassis replacement.

Verifying component failure

The controller enclosure CRU includes the enclosure's metal housing, the module runner system, the integrated Ops
panel, and the assembled/installed midplane PCB that connects controller modules, disk drive modules, and power and
cooling modules. See the empty enclosure chassis pictorials:
This CRU replaces an enclosure that has been damaged, or whose midplane has been damaged. Often, a damaged
midplane will appear as though a RAID canister has failed. If you replace a controller module and it does not remedy the
fault, you may need to replace the enclosure chassis.
You can observe enclosure health (front panel and rear panel) using management interfaces to verify
enclosure/component failure or enclosure/component operation. See also

Preparing to remove a damaged storage enclosure chassis

Because you are removing and replacing an entire storage enclosure chassis, neither the hot-swap capability that applies
to replacing individual redundant CRUs in an operational storage enclosure, nor the hot-add of a drive enclosure to an
operational storage system, apply to this procedure.
1. Stop all I/O from hosts to the system. See also
2. Shut down the controllers. See also
3. Power off the system – controller enclosure first; expansion enclosures next: see
(page 54).
92 Module removal and replacement
and "4005 Series enclosure models" (page
"Stopping I/O" (page
"Shutting down a controller module" (page
73).
page
2U12–Figure 14 (page 23) and
"Using management interfaces" (page
88).
88).
"Powering on/powering off"
"5005 Series
77.
2U24–Figure 15 (page 23).
95).