CHAPTER 2 Hardware Configuration
2.9 DU (Disk unit)
59
2.9.1 DU specifications
This section shows the conceptual diagram and specifications of the DU.
FIGURE 2.23 DU conceptual diagram
TABLE 2.13 DU specifications
Item Specifications
PCI Express Gen2, 4 Lane slot ×2
PCI Express slot and SGPIO Controller for mounting the
SAS RAID controller card
HDD slot
2.5 inch SAS/SATA-HDD slot×4
SGPIO Present monitoring and Fault LED control by
SGPIO controller (each HDD)
Supported RAID level
0, 1, 5, 6, 10, 1E (*2)
Power, Attention, Access LED (for each HDD), Alarm
LED (each HDD)
Dimension (mm) (except protrusions)
Width 45 x Depth 526 x Height 215
Weight (kg) (without HDD/SSD)
2.9 kg
*1: Hot plug of HDD is enabled only when HDD is duplicated by the RAID.
*2: Usable RAID levels are dependent on the number of SAS RAID controller cards and the number of HDDs
mounted in the DU.