HP StorageWorks Modular Smart Array 500 Overview page 5

QuickSpecs
Modular Smart Array 500 Components
Modular Smart Array 500 Modular Smart Array 500 Modular Smart Array 500 Modular Smart Array 500
Controller Controller Controller Controller
4-Port Shared Storage 4-Port Shared Storage 4-Port Shared Storage 4-Port Shared Storage
Module with Smart Array Module with Smart Array Module with Smart Array Module with Smart Array
Multipath Multipath Multipath Multipath
Modular Smart Array 500 Modular Smart Array 500 Modular Smart Array 500 Modular Smart Array 500
Controller Management Controller Management Controller Management Controller Management
Features Features Features Features
Controller Firmware Controller Firmware Controller Firmware Controller Firmware
Cloning Cloning
Cloning Cloning
Multi Host Storage Multi Host Storage Multi Host Storage Multi Host Storage
Sharing Sharing Sharing Sharing
RAID RAID RAID RAID
The Modular Smart Array 500 Controller is an integrated RAID controller with an integrated LCD/LED status display and
128-MB read/write battery-backed cache (expandable to 512MB per controller). One Modular Smart Array 500 Controller is
included with the Modular Smart Array 500; the redundant Modular Smart Array 500 Controller is an option..
The 4-Port Shared Storage Module is an option which may be used in one of two configurations:
Enhance cluster fault tolerance by adding multiple paths from the host servers to the shared storage. This provides
an additional level of fault tolerance by adding redundancy to both the HBA in the host server as well as the SCSI
cables connecting the host servers to the shared storage.
Attach up to four independent servers to the Modular Smart Array 500. The storage capacity to each server is
assigned with SSP (Shared Storage Presentation), a feature of the Array Configuration Utility. Using SSP and sharing
storage among multiple host servers maximizes hard drive capacity utilization, and allows for additional hard drive
capacity to be deployed (up to 14) with the volume extension and capacity expansion capabilities.
Online RAID Level Migration: allows for online post-configuration change to RAID level without destroying data or
volume information.
Online Capacity Expansion: allows for adding storage to an operational Modular Smart Array 500-reducing
expensive server downtime (single path configuration only).
Online Volume Extension: allows for the capacity growth of existing logical volumes (single path configuration
only).
Logical Drive Capacity Extension: allows the user to increase the size of existing logical drives online under
Windows NT® and offline for other operating systems.
Online Stripe Size Migration: Allows changing stripe sizing of a logical drive.
User Selectable Read/Write Cache size, allocate cache sizes.
User Selectable Expand and Rebuild Priority.
Enhanced Controller Firmware Auto-Cloning allows customer choice of controller firmware version when adding redundant
controller with different firmware version.
Selective Storage Presentation (SSP) support standard on both the base 2-port model of Modular Smart Array 500 as well as
the optional 4-port Shared Storage Module. SSP allows the administrator to create volumes and assign access rights to a
particular host server. This allows sharing the Modular Smart Array 500 with up to 4 host servers maximizing storage
capacity utilization. SSP also allows online capacity expansion as well as online volume extension in DAS configurations.
Several fault tolerant configurations keep data available and servers running while drives are being replaced, including:
Advanced Data Guarding (RAID ADG): Allocates the equivalence of 2 parity drives across multiple drives and
allows simultaneous write operations.
Distributed Data Guarding (RAID 5): Allocates parity data across multiple drives and allows simultaneous write
operations.
Drive Mirroring (RAID 1 and 1+0 Striped Mirroring): Allocates half of the drive array to data and the other half to
mirrored data, providing two copies of every file.
DA - 11050
HP StorageWorks Modular Smart Array 500 HP StorageWorks Modular Smart Array 500 HP StorageWorks Modular Smart Array 500 HP StorageWorks Modular Smart Array 500
Canada — Version 13 — July 19, 2004 Page 5