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
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