• Never mix HDDs and SSDs in the same RAID group.
RAID Controller Migration
This server supports SAS/SATA hardware RAID (controller card) and embedded software SATA RAID. You
cannot use hardware RAID and software RAID at the same time. See the table below for which data migrations
are allowed and a summary of migration steps.
Migrate to Software RAID
Allowed?
Migrate to Hardware RAID Allowed?Starting RAID Controller
Allowed
1. Install SATA interposer
card.
2. Install SATA cables.
3. Enable embedded RAID
in BIOS.
Allowed
1. Install RAID card.
2. Install SAS cables.
None (no drives).
Embedded RAID is disabled in
the BIOS.
-Data migration from software
RAID to hardware RAID is not
supported and could result in data
loss.
Caution
Allowed only before there is data on the
drives; data migration is not supported.
1. Disable embedded RAID in the BIOS.
2. Install RAID card.
3. Install SAS cables.
Embedded software RAID.
Embedded RAID is enabled in
the BIOS.
Not allowed.-Hardware RAID.
Embedded RAID is disabled in
the BIOS.
Storage Controller and Backplane Connectors
This section describes cabling connections for the storage controllers and the backplane. The SAS/SATA
cables are factory-installed and are used for all supported internal controllers in the SFF 10-drive
(APIC-SERVER-M3 and APIC-SERVER-L3) servers.
This section also contains diagrams that show the cable-to-drive mapping.
Cisco APIC M3/L3 Server Installation and Service Guide
102
Storage Controller Considerations
RAID Controller Migration
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