HP 1500 cs manual Key Features, Maintains connections to storage, Configurations

QuickSpecs

HP StorageWorks 1500 cs Modular Smart Array

Compatibility

http://www.hp.com/go/MSA1500cs for additional details.

HP StorageWorks Secure HP StorageWorks Secure Path is a family of high availability multi-pathing software products providing

Pathcontinuous data access from the HP RAID Array to host servers running the Windows Server 2003, Windows 2000, and Linux operating systems.

Redundant hardware, advanced RAID technology and Secure Path's automated failover capability are used to enhance fault tolerance and availability. Secure Path effectively eliminates controllers, disk drives, interconnect hardware and host bus adapters as single points of failure in the storage subsystem.

The attachment of non-Secure Path (single HBA) servers to a MSA1500 cs with dual controllers that has servers with Secure Path (dual HBA) attached is supported where the operating system is Windows or Netware. Users must realize that in event of a controller fail-over (failure of active controller) the single path servers will lose access to their data on the MSA1500 cs.

NOTE: If Secure Path for Linux is used on any node attached to an MSA1500 cs, all nodes must also have Secure Path installed, regardless of operating systems.

NOTE: refer to http://www.hp.com/go/securepath for the latest Secure Path parameters.

Key Features	Maintains connections to storage
	Monitors I/O paths and alerts on significant events
	Used in Stand alone Configurations, Cluster Configurations, and SAN
	configurations

MSA1500 Clustering Clustering is rapidly gaining in popularity as users desire a high level of data availability. Many of the old cluster restrictions that were the product of both hardware and operating systems have been overcome. While there still remain configuration limits, the result is a new high degree of flexibility both in number of clusters, mixing clusters with single nodes, and the integration of dissimilar operating systems. Initially Windows, HP-UX and Linux clusters can be attached to an MSA1500 having both SCSI and SATA drives, while NetWare clusters currently only support SCSI drives. This is only a restriction in a NetWare clustered environment.

For example you may mix three Microsoft (Windows Server 2003, or Windows 2000) clusters and other individual servers, even doing so in a heterogeneous server operating system environment. Windows Server 2003 allows a single cluster of up to eight nodes.

Single-path (single controller, non-Secure Path) NetWare clustering has been successfully tested up to a 12-node cluster. NetWare clusters employing Secure Path (dual controller, dual HBAs) are limited to six nodes. Multiple NetWare clusters (and single servers) may have concurrent access with no limitation inherent to the MSA1500 cs. Likewise up to a 16-node Linux cluster (single controller, non-Secure Path) utilizing SteelEye LifeKeeper for Linux clustering software has been tested and is supported. Refer to http://www.hp.com/go/securepath for any restriction with Secure Path.

The MSA1500 cs has the ability to be configured with thirty-two LUNs. A configuration of twenty attached servers has been tested and is supported. More commonly, users have had an average of four to eight nodes. This can be any combination of hosts or clusters with different operating systems (while holding fast to the guidelines and limits described in the above paragraphs. Performance within these guidelines is heavily dependent on the actual number of end users and types of applications being employed.

For more information, click on the link: http://www.hp.com/enterprise/highavailability/index.html.

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