DD640, DD670, DD860, and DD890 Disk Drive Replacement 5
Overview
Table 1 shows the disk drive specifications for the DD640, DD670, DD860, and DD890
systems.
Note: The DD640 is available as a 7-drive or 12-drive system.
Disk drive slots are numbered top down in each column, starting at the top left as shown
in Figure 1. Unused disk drive slots contain blank carriers.
Figure 1: DD640 and DD670 Disk drive numbers
Figure 2: DD860 and DD890 Disk Drive Numbers
Note: Some Data Domain systems have less than 12 disks. All disk drive bays must
contain a carrier with a disk drive installed in it or a carrier with an air baffle installed.
The disk drive carriers contain LED indicators to display the disk drive status.
Figure 3: Disk drive carrier
Table 1: Disk Drive Specification
Model Number of
Disk Drives
Disk Drive Bay
Numbers
DD640 7 1-7
DD640 12 1-12
DD670 12 1 - 12
DD860 4 1, 2, 4, and 5
DD890 4 1, 2, 4, and 5
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