Chapter 4. IBM NeXtScale nx360 M4 compute node 79
The 3.5-inch drive slides in place. The 2.5-inch and 1.8-inch drive bays pivot up
so that you can insert the drives. You then pull the release pin and lower the drive
bays back into place.
There are two 3.5-inch drive cages - the last two rows of Table 4-12 on page 78.
If the Storage Native Expansion Tray is attached to the nx360 M4, then the use of
the RAID cage (feature A4GE, option 00Y8615) allows you to configure a RAID
array that spans all 8 drives - the 7 in the storage tray and the 1 drive internal to
the nx360 M4. Such a configuration would be connected either to a ServeRAID
M1115 adapter or N2115 SAS HBA.
If the 3.5-inch HDD cage (feature A41J) is used, then a RAID array can only be
formed with the 7 drives in the storage tray. In such a configuration, the drives in
the storage tray are connected either to a ServeRAID M1115 adapter or N2115
SAS HBA, and the single drive in the nx360 M4 is connected to the ServeRAID
C100.
4.7.1 Controllers for internal storage
The nx360 M4 server support the following disk controllers:
ServeRAID C100: An onboard SATA controller with software RAID
capabilities
ServeRAID H1110 SAS/SATA: An entry-level hardware RAID controller that
integrates popular SAS technology
ServeRAID M1115 SAS/SATA: An advanced RAID controller with cache/flash
modules and energy packs, and software feature upgrades in an flexible
offerings structure.
N2115 SAS/SATA HBA for IBM System x: A high-performance host bus
adapter for internal drive connectivity.
Table 4-13 lists the ordering information for RAID controllers and SAS HBA.
Table 4-13 Table 8. Controllers for internal storage
Part number Feature code Description
RAID controllers
None A17T ServeRAID C100 for System x
a
81Y4492 A1XL ServeRAID H1110 SAS/SATA Controller for IBM System x
81Y4448 A1MZ ServeRAID M1115 SAS/SATA Controller for IBM System x
46C8988 A3MW N2115 SAS/SATA HBA for IBM System x
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