Lenovo ThinkSystem SN550 Product Manual page 22

Table 18. SN550 RAID controllers with features
Feature
Adapter type
Part number
Form factor
Controller chip
Host interface
Port interface
Drive interface
Drive type
Hot-swap drives
Max devices
RAID levels
JBOD mode
Cache
CacheVault cache protection
Performance Accelerator (FastPath)
SED support
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
Lenovo ThinkSystem SN550 Server
Onboard RAID 530-4i
Software RAID RAID controller
None 7M27A03918
Integrated Adapter
Intel PCH (RSTe) LSI SAS3404
Not applicable PCIe 3.0x8
6 Gb SATA 12 Gb SAS
SATA SAS, SATA
HDD, SSD HDD, SED, SSD
Yes Yes
2 2
0, 1 0, 1
Yes Yes
No No
No No
No Yes
No Yes
RAID 930-4i
RAID controller
7M27A03917
Adapter
LSI SAS3504
PCIe 3.0x8
12 Gb SAS
SAS, SATA
HDD, SED, SSD
Yes
2
0, 1
Yes
2GB (Standard)
Yes (Flash)
Yes
Yes
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