Servicing the 7x20 Controller
7420 System Drives
The 7420 M2 has two 900GB SAS-2 system boot drives in slots 0 and 1, configured as a
mirrored pair. Up to four 1.6TB SAS-2 Readzilla SSDs may fill slots 2 through 5, in order. In a
7420 M2 cluster, the number of solid state drives (SSDs) installed in each controller can vary.
7420 controllers have two 500GB SATA system boot drives in slots 0 and 1, configured as a
mirrored pair. Zero, two, three, or four 512GB SSDs, may optionally fill slots 2 through 5, in
order. In a 7420 cluster, the number of SSDs installed in both controllers must match.
FIGURE 37
7420 Controller System Drive
Figure Legend
1 Ready to remove (blue) 2 Service action required (amber) 3 OK/Activity (green)
158 Oracle ZFS Storage Appliance Customer Service Manual • February 2016
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