Raid Controller Migration; Storage Controller And Backplane Connectors - Cisco APIC M3 Installation And Service Manual

RAID Controller Migration

• 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.
Starting RAID Controller
None (no drives).
Embedded RAID is disabled in
the BIOS.
Embedded software RAID.
Embedded RAID is enabled in
the BIOS.
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
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Migrate to Hardware RAID Allowed?
Allowed
1. Install RAID card.
2. Install SAS cables.
Caution Data migration from software
RAID to hardware RAID is not
supported and could result in data
loss.
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.
-
Storage Controller Considerations
Migrate to Software RAID
Allowed?
Allowed
1. Install SATA interposer
card.
2. Install SATA cables.
3. Enable embedded RAID
in BIOS.
-
Not allowed.