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Powering off the Model 092 expansion enclosure
Before you power off an expansion enclosure, review the following procedure.
When you power off an expansion enclosure, the drives in that enclosure are no longer available to the
declustered array. The missing drive might exceed the enclosure failure protection that results in to
resignation of the corresponding recovery group. For more information about removing power from an
expansion enclosure, see IBM Spectrum Scale RAID: Administration guide.
Important: To avoid potential equipment damage during transport and subsequent loss of data, see
"Transporting a Model 092 expansion enclosure" on page 65. The procedure describes what to do for
the following situations:
• When you are powering off a Model 092 expansion enclosure because you intend to transport it to
another location.
• When you intend to move a rack that contains a Model 092 expansion enclosure.
The procedure describes how to remove each drive from the Model 092 enclosure and transport the
enclosure. Removing the drives prevents damage to the drives and makes the lighter enclosure easier to
move.
1. Stop all I/O to the system from all clients that access the file system, which is defined on the recovery
group that is created in the expansion enclosure.
2. Unmount any associated file systems.
3. Wait 5 minutes for all write data to be flushed to the drives.
4. Stop IBM Spectrum Scale RAID in both I/O servers of the building block.
5. To remove all power from the enclosure, unplug both power cords from the rear of the expansion
enclosure.
Transporting a Model 092 expansion enclosure
To transport an expansion enclosure or an entire rack that contains one or more of these Model 092
enclosures, follow these steps to protect against drive damage:
1. Safely power down the Model 092 enclosure by referring to "Powering off the Model 092 expansion
enclosure" on page 65. Do not remove rack power until systems are safely powered down.
2. Transfer all of the drives in the Model 092 enclosure into their original packaging or equivalent
packaging for safe transportation.
The original packaging consists of an anti-static bag for each drive, an inner carton with protective,
padded slots for 20 drives, and an outer carton to hold three inner cartons of drives.
3. Disconnect only the cables necessary for the equipment move.
4. Remove the Model 092 enclosure from the rack. See in the Servicing chapter..
Note: An IBM intranet connection is required to access this website.
5. Return all components, except the drives, to the Model 092 enclosure for shipping.
Do not return the drives to the Model 092 enclosure until the enclosure is at its new location and is not
to be moved again.
Model 092 expansion enclosure LEDs and indicators
The enclosure has several sets of LEDs that provide information about the overall status of the enclosure,
power, drives, fans, canisters, and SAS connections. An expansion enclosure has sets of LEDs on the front
and rear of the enclosure. Inside of the expansion enclosure, LEDs also indicate the status of the drives
and each secondary expander module.
Chapter 5. Installing Model 092 expansion enclosure 65
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