Continuous Operation During Replacement; Firmware Updates; Customer-Replaceable Units (Crus); Crus Addressing 4U100 Chassis - Seagate Exos AP 4U100 Installation And Maintenance Manual

Continuous operation during replacement

Your hardware or software enclosure management application determines the capability for replacing a failed disk
without the loss of access to any file system on the enclosure. Enclosure access and use during this period is
uninterrupted. If an enclosure is equipped with redundant PSUs, sufficient power is provided to the system while the
faulty module is replaced.
NOTE: Exos AP 4U100 enclosures support hot-plug replacement of redundant controller modules, power supplies, fan
modules, and HS expanders. Hot-add replacement of expansion enclosures is also supported.

Firmware updates

After installing the hardware and powering ON the storage system components for the first time, verify that the
controller modules, expansion modules, and drives are using the current firmware release. Periodically, you should ensure
that the firmware versions used in enclosure modules are compatible. Product Release Notes describe the process for
updating firmware. Contact your system engineer or raise a ticket in the Support portal for additional information.

Customer-replaceable units (CRUs)

CRUs addressing 4U100 chassis

Table 9 Exos AP 4U100 product components
Item Enclosure CRU and related component description
1 Drive (LFF/SFF) module:
a) DDIC 3.5" LFF (drives of differing type, SAS or SATA interface, and capacity)
b) DDIC 2.5" SFF (disks of differing type, SAS or SATA interface, and storage capacity)
2 Chassis (sheet metal enclosure) with integrated PCBAs (baseplanes included with chassis; not available
separately)
3 Power supply unit (PSU) module available as AC unit (chassis uses two PSUs of same model type)
4 Controller module to provide server capability to the enclosure
5 System fan module
6 Controller fan module
7 HS Expander module (PCBA card)
8 Rail kit (variable attachment options)
a) Rack mount kit, shelf, long (1.2 m), HW
b) Cable Management Arm (CMA) and brackets
9 Cable kits [Cable package: standard HD mini-SAS (SFF-8644) to HD mini-SAS (SFF-8644)]
10 AC power cord compatible with AC PSU
1-The Access column lists the enclosure panel from which the CRU is observed and accessed. It does not apply to other components.
2-See "Enclosure chassis" (page 31)
3-See "Preparing for installation" (page
for a description of the chassis CRU.
46)and "Installing the 4U100 enclosure" (page 63) for descriptions of the rail kit and CMA.
Continuous operation during replacement
1
Access
Top
Note 2
Rear
Rear
Rear
Top
Top
Note 3
N/A
N/A
87