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Disks Replacement Considerations
Table 9: Drive Type Mixing
Mix of Drive Types in
RAID Group
SATA HDD + SATA
HDD
SATA SSD + SATA SSD
SAS HDD + SAS HDD
SAS SED HDD + SAS
SED HDD
SAS HDD + SATA HDD
SAS HDD + SAS SED
HDD
HDD + SSD
1 With or without encryption enabled.
2 Virtual disk encryption cannot be enabled.
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.
• Never mix SAS and SED SAS.
Disks Replacement Considerations
For the best compatibility with NFVIS, follow these guidelines:
• - When replace a faulty unit, make sure the replacement unit does not have existing partitions.
• - Do not swap the drives between Slot-0 and Slot-1.
• - Do not swap or replace drives used by other ENCS system without reformatting it beforehand.
RAID Backup Units
ENCS-MRAID does not support RAID backup units.
Cisco 5400 Enterprise Network Compute System Hardware Installation Guide
40
JBOD
RAID-1
Yes
Yes
Yes
Yes
Yes
Yes
1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Supported RAID Controllers and Required Cables
RAID-0 (not in 3.6.1)
Yes
Yes
Yes
1
1
Yes
Yes
2
2
Yes
No
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