
TX150 S5 Options Guide 7
Introduction Extensions and conversions
1.2 Extensions and conversions
Extension of the main memory
The four slots for the main memory are suitable for DDR2 PC2-4200 (533 MHz,
unbuffered) SDRAM memory modules with ECC. The organization in two
memory banks, 1 and 2, permits rapid memory access with two-way inter-
leaving. If the memory modules are populated in pairs, each pair must consist
of identical memory modules (2-way interleaved mode).
Additional accessible drives
Three 5.25-inch bays are available for accessible drives. The top side bay is
already occupied by a DVD/DVD-RW drive. In the free bays you can install a
second DVD/DVD-RW drive, magnetic tape drives or a SAS hard disks
extension box (only SAS base units). Below the 5.25-inch bays for accessible
drives you will find also a bay for a 3.5-inch floppy disk drive.
Hard disks extension box
In the SAS base units the two lower 5.25-inch bays for accessible drives can be
used to install a hard disks extension box.
The hard disks extension box enables up to two additional SAS HDD modules
or up to two additional SATA HDD modules to be integrated. Each HDD module
can accommodate a hard disk drive with a SAS or SATA interface and a height
of at most 1 inch. The connection to the SAS/SATA backplane is made without
cables via the SAS or SATA interface. This makes it simple to plug in or pull out
the HDD modules. If the server has a RAID controller and the corresponding
RAID configuration, defective HDD modules can also be replaced while the
system is operating.
Additional controllers in the PCI slots
The system board offers five PCI slots:
– 2 x PCI-X (64 Bit / 66 MHz / 100 MHz, 3.3 V)
– 1 x PCI (32 Bit / 33 MHz, 5 V)
– 1 x PCI-Express x1 (0.5 GB/s)
– 1 x PCI-Express x4 (2.0 GB/s)
The PCI slot 2 (blue) is prepared for Zero Channel RAID (ZCR is only possible
in the SAS base units).