Table 18. SN550 RAID controllers with features
Feature Onboard RAID 530-4i RAID 930-4i
Adapter type Software RAID RAID controller RAID controller
Part number None 7M27A03918 7M27A03917
Form factor Integrated Adapter Adapter
Controller chip Intel PCH (RSTe) LSI SAS3404 LSI SAS3504
Host interface Not applicable PCIe 3.0x8 PCIe 3.0x8
Port interface 6 Gb SATA 12 Gb SAS 12 Gb SAS
Drive interface SATA SAS, SATA SAS, SATA
Drive type HDD, SSD HDD, SED, SSD HDD, SED, SSD
Hot-swap drives Yes Yes Yes
Max devices 2 2 2
RAID levels 0, 1 0, 1 0, 1
JBOD mode Yes Yes Yes
Cache No No 2GB (Standard)
CacheVault cache protection No No Yes (Flash)
Performance Accelerator (FastPath) No Yes Yes
SED support No Yes Yes
Both the 530-4i and 930-4i replace the onboard SATA controller in the server and support high-
performance RAID-0 and RAID-1 to the two internal 2.5-inch drive bays. These controllers are installed at
the front of the server over the top of the drive bays.
The following figure shows the ThinkSystem RAID 530-4i adapter for the SN550 blade server. Note that the
plastic frame in the lower right of the adapter is part of the mechanism that attaches the adapter to the
server; this adapter does not support a supercapacitor.
Figure 5. ThinkSystem RAID 530-4i 2 Drive Adapter
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