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Service information for the PCIe storage enclosures
This collection provides service information for the 5888 or EDR1 Peripheral Component Interconnect
Express (PCIe) storage enclosure.
Overview of 5888 or EDR1 PCIe storage enclosure service
Find information to help you service the 5888 or EDR1 PCIe storage enclosure.
The IBM EXP30 Ultra SSD I/O Drawer (feature code 5888 and EDR1) is a 1.8-inch solid-state drive (SSD)
optimized PCIe storage enclosure that is mounted in a 19-inch rack. It attaches to supported POWER7
processor-based systems by using PCI Express generation 2 (PCIe2) GX++ adapters and PCIe2 cables. The
5888 or EDR1 PCIe storage enclosure includes the following components:
v Redundant power supplies
v Redundant fans
v Two redundant, large cache PCIe2 serial-attached SCSI (SAS) redundant array of independent disks
(RAID) controllers along with redundant SAS port expanders
v Up to 30 1.8-inch dual port SAS SSDs
The 5888 and EDR1 PCIe storage enclosures contain two redundant enclosure RAID modules (ERMs),
which contain a SAS RAID controller, a SAS port expander, and a replaceable fan assembly. Two power
supplies provide an N+1 redundant feature that allows one power supply to power the entire enclosure if
the other power supply failed or is missing.
v The two power supplies have built-in fans.
v Fan speed is automatically adjusted, as needed, to ensure correct cooling temperatures of the enclosure
even when a fan fails.
The SAS RAID controllers are always configured in a dual controller (dual storage I/O adapter)
configuration. This configuration provides redundant access paths to the SAS devices and mirrored copies
of cache data and parity update footprints. The dual controller configuration also allows for increased
performance capability when multiple RAID arrays are used in an Active/Active configuration mode.
The SAS RAID controllers support RAID 0, 10, 5, and 6 and the hot-spare function.
The 5888 or EDR1 PCIe storage enclosure is a one EIA unit drawer that is mounted in a 19-inch rack. It is
designed for light path service with light-emitting diode (LED) indicators on the front and rear of the
enclosure chassis. These chassis LED indicators provide status and fault information for the following
components and conditions:
v Enclosure identification
v Enclosure power
v Enclosure fans
v ERMs
v Enclosure faults
v SSD activity and SSD fault or identification
The PCIe storage enclosure is designed for front and rear service, performed in place (that is not in a
service position) except for the midplane field replaceable unit (FRU) replacement.
© Copyright IBM Corp. 2012, 2013
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