C-4
Cisco UCS C240 Server Installation and Service Guide
OL-25761-01
Appendix C RAID Controller Considerations
LSI Nytro MegaRAID 8110-4i Considerations
LSI Nytro MegaRAID 8110-4i Considerations
Note the following restrictions regarding support of the LSI Nytro MegaRAID 8110-4i card in this
server:
• This card is not supported with the SFF 16-drive direct-connect backplane version of the server.
• This card is supported only in slot 3 of the server.
• This card is supported only in dual-CPU configurations.
• This card is supported only with hard disk drives (not solid state drives).
• This card cannot coexist with any installed GPU card.
• This card cannot coexist with multiple RAID controllers.
Mixing Drive Types in RAID Groups
Table C-2 lists the technical capabilities for mixing hard disk drive (HDD) and solid state drive (SSD)
types in a RAID group. However, see the best practices recommendations that follow for the best
performance.
Best Practices For Mixing Drive Types in RAID Groups
For the best performance, follow these guidelines:
• Use either all SAS or all SATA drives in a RAID group.
• Use the same capacity for each drive in the RAID group.
• Never mix HDDs and SSDs in the same RAID group.
Table C-2 Drive Type Mixing in RAID Groups
Mix of Drive Types
in RAID Group Allowed?
SAS HDD + SATA HDD Yes
SAS SSD + SATA SSD Yes
HDD + SSD No