76 IBM System x3850 X6 and x3950 X6 Planning and Implementation Guide
The Storage Book supports up to eight drives (2.5-inch format) or up to 16 1.8-inch solid-state
drives (using two 8-bay eXFlash units) in the following combinations:
4x 2.5-inch hot-swap drive bays
8x 2.5-inch hot-swap drive bays
4x 2.5-inch hot-swap drive bays + 8x 1.8-inch hot-swap SSD bays
8x 1.8-inch hot-swap SSD bays
16x 1.8-inch hot-swap SSD bays
Figure 3-19 shows all available combinations of drives in the Storage Book:
Figure 3-19 Storage Book population capabilities
3.10.2 Backplanes
The drives in each Storage Book are connected by backplanes and there are two types of
backplanes:
Backplane to connect four 2.5-inch hot-swap drives
Backplane to connect eight 1.8-inch hot-swap SSDs (IBM eXFlash SSD unit)
Each Storage Book can house two backplanes. All standard models ship with one backplane
with four 2.5-inch hot-swap drive bays.
2.5" HDD 3
2.5" HDD 2
2.5" HDD 1
2.5" HDD 0
2.5" HDD 7
2.5" HDD 6
2.5" HDD 5
2.5" HDD 4
Blank
2.5" HDD 3
2.5" HDD 2
2.5" HDD 1
2.5" HDD 0
Blank
1.8" SSD 7
1.8" SSD 6
1.8" SSD 5
1.8" SSD 4
1.8" SSD 3
1.8" SSD 2
1.8" SSD 1
1.8" SSD 0
1.8" SSD 15
1.8" SSD 14
1.8" SSD 13
1.8" SSD 12
1.8" SSD 11
1.8" SSD 10
1.8" SSD 9
1.8" SSD 8
1.8" SSD 7
1.8" SSD 6
1.8" SSD 5
1.8" SSD 4
1.8" SSD 3
1.8" SSD 2
1.8" SSD 1
1.8" SSD 0
2.5" HDD 3
2.5" HDD 2
2.5" HDD 1
2.5" HDD 0
1.8" SSD 15
1.8" SSD 14
1.8" SSD 13
1.8" SSD 12
1.8" SSD 11
1.8" SSD 10
1.8" SSD 9
1.8" SSD 8
May Reverse Backplanes Order
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