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Configuring Local Disk Configuration Policies
Local Disk Configuration Policy
This policy configures any optional SAS local drives that have been installed on a server through the onboard
RAID controller of the local drive. This policy enables you to set a local disk mode for all servers that are
associated with a service profile that includes the local disk configuration policy.
The local disk modes include the following:
• No Local Storage—For a diskless server or a SAN only configuration. If you select this option, you
cannot associate any service profile which uses this policy with a server that has a local disk.
• RAID 0 Striped—Data is striped across all disks in the array, providing fast throughput. There is no
data redundancy, and all data is lost if any disk fails.
• RAID 1 Mirrored—Data is written to two disks, providing complete data redundancy if one disk fails.
The maximum array size is equal to the available space on the smaller of the two drives.
• Any Configuration—For a server configuration that carries forward the local disk configuration without
any changes.
• No RAID—For a server configuration that removes the RAID and leaves the disk MBR and payload
unaltered.
• RAID 5 Striped Parity—Data is striped across all disks in the array. Part of the capacity of each disk
stores parity information that can be used to reconstruct data if a disk fails. RAID 5 provides good data
throughput for applications with high read request rates.
• RAID 6 Striped Dual Parity—Data is striped across all disks in the array and two parity disks are used
to provide protection against the failure of up to two physical disks. In each row of data blocks, two sets
of parity data are stored.
• RAID10 Mirrored and Striped— RAID 10 uses mirrored pairs of disks to provide complete data
redundancy and high throughput rates.
You must include this policy in a service profile, and that service profile must be associated with a server for
the policy to take effect.
Guidelines for all Local Disk Configuration Policies
Before you create a local disk configuration policy, consider the following guidelines:
No Mixed HDDs and SSDs
Do not include HDDs and SSDs in a single server or RAID configuration.
Do Not Assign a Service Profile with the Default Local Disk Configuration Policy from a B200 M1 or M2 to a
B200 M3
Due to the differences in the RAID/JBOD support provided by the storage controllers of B200 M1 and M2
servers and those of the B200 M3 server, you cannot assign or re-assign a service profile that includes the
default local disk configuration policy from a B200M1 or M2 server to a B200 M3 server. The default local
disk configuration policy includes those with Any Configuration or JBOD configuration.
Cisco UCS Manager GUI Configuration Guide, Release 2.0
OL-25712-04 407
Configuring Local Disk Configuration Policies