Avago Technologies Syncro 9361-8i - Manual (Page 6)

Avago Technologies
- 6 -
Syncro CS 9361-8i and Syncro CS 9380-8e Controllers User Guide
November 2014 Chapter 1: Introduction
Hardware Compatibility
 Controller-to-controller intercommunication over SAS
 Write-back cache coherency
 Shared and exclusive VD I/O access policies
 Operating system boot from the controller (exclusive access)
 Controller hardware and property mismatch detection, handling, and reporting
 Global hot spare support for all volumes in the HA domain
 Planned and unplanned failover modes
 CacheVault® modules to provide cache cached data protection in case of host power loss or server failure
 Full MegaRAID® features, with the following exceptions.
— CacheCade® is not supported.
— Dimmer switch is not supported.
— SGPIO sideband signaling for enclosure management is not supported.
— SATA drives are not supported.
— SSD drives that do not support SCSI-3 persistent reservations (PR) for the VDs are not supported.
— System/JBOD physical drives are not supported (that is, the individual physical drives are not exposed to the
operating system).
— Drives that are directly attached to the controller (not through an expander device) are not supported.
— Cluster-active reconstruction operations (RAID-Level Migration or Online Capacity Expansion) are not
supported.
— Patrol Read operations that were in progress do not resume after failover.
— Firmware-level node incompatibility details are not reported for non-premium features.
— The Maintain Pd Fail History feature is not supported. This feature, which is available in the WebBIOS utility
and the MegaRAID Command Tool, maintains the history of all drive failures.
— Cache memory recovery is not supported for I/O shipped commands. I/O shipping occurs when a cluster
node has a problem in the I/O path, and the I/O from that cluster node is shipped to the other cluster node.
— Battery backup units are not supported.
— HA-DAS does not support configuration of a global hot spare (GHS) when no VDs exist on the two nodes.
Configuring a GHS when no VDs exist on the two nodes and then rebooting both nodes can cause problems.
1.4 Hardware Compatibility
The servers, disk drives, and optional enclosures you use in the Syncro CS solution must be selected from the list of
approved components that LSI has tested for compatibility. Refer to the web page for the compatibility lists at
http://www.lsi.com/channel/support/pages/interoperability.aspx.
NOTE The Syncro CS solution requires the use of SAS SSD drives that support
SCSI-3 persistent reservations (PR) for the VDs. The compatibility list
shows the SAS SSD drives that meet the HA-DAS requirements.