SCSI disk technology is the right choice for entry-level network storage because it offers the same advantages that FC disks provide for large enterprise disk arrays, but at a more affordable price point. In addition, SCSI offers a simple migration path from storage directly attached to servers (DAS) to a storage area network (SAN).
Serial ATA (SATA) disks available for HP StorageWorks MSA arrays provide a much lower cost per megabyte than SCSI or fibre channel disks. Serial Attached SCSI (SAS) is the next-generation storage solution for your enterprise environment. SAS integrates two established technologies, combining proven utility, reliability and performance attributes of the SCSI protocol with the performance advantages of serial architecture. Serial Attached SCSI allows the customer ultimate configuration flexibility and simplicity in their storage environments.
(ATA) or performance and reliability in mission critical applications (SCSI). This reduces customer investment while at the same time increases customer choice and ease of deployment. Ultimately, customers can buy one server or storage solution and customize the technology to fit their unique needs.
SATA is not intended as a replacement technology. SCSI or fibre channel disks remain a better choice for reliable, high performance storage. However, if you want cost-effective storage for infrequently accessed data—such as data repositories or reference information—then SATA is perfect.
The MSA family |
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Low-cost |
High-performance |
Affordable external storage |
Affordable starter SAN |
Flexible, scalable SAN |
| Disk technology |
SATA |
SCSI |
SCSI |
SCSI |
SATA or SCSI |
| Scalability |
Up to 6 TB per Enclosure |
Up to 4 TB per Enclosure |
Up to 4 TB |
Up to 12.6 TB |
Up to 48 TB (SATA) or 16.8 TB (SCSI) |
| RAID |
1 controller in the server enables RAID management |
Full redundancy with up to 2 array controllers, 4 Port Module and Dual HBAs |
No single point of failure with redundant HBAs Controllers and Switches |
| Features |
Can be used as an expansion cabinet for the MSA1500 |
-Enables host virtualization and
Embedded switch option on MSA1000 |
» Next: Typical SAN solutions
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