HP 273914-B21 HP Smart Array Controller technology, 3rd edition - Page 25

Tape device support Smart Array controllers support tape back-up devices. The One Button Disaster Recovery (OBDR) ProLiant server/controller compatibility matrix for currently shipping HP products is available at www.hp.com/go/obdr. Smart Array Advanced Pack HP Smart Array Advanced Pack (SAAP) firmware provides advanced functionality within Smart Array controllers. This firmware further enhances performance, reliability, and availability of data. SAAP is hosted on the Smart Array controller hardware firmware stack. It can be enabled beginning with the present generation of Smart Array controllers. SAAP requires a license key for activation. After activation, administrators can use several standard capabilities: • RAID 6 protects against failure of any two drives. It requires a minimum of four drives, but only two will be available for data. RAID 6 can tolerate multiple simultaneous drive failures without downtime or data loss and is ideal for applications requiring large logical volumes, because it can safely protect a single volume of up to 56 disk drives. RAID 6 also offers lower implementation costs and greater usable capacity per U than RAID 1. • RAID 60 (RAID 6+0) is a nested RAID method that uses RAID 0 block-level striping across multiple RAID 6 arrays with dual distributed parity. RAID 60 allows administrators to split the RAID storage across multiple external boxes. It requires a minimum of eight drives, but only four will be available for data. NOTE: HP BladeSystem servers do not support RAID 6 and 60 • Advanced Capacity Expansion (ACE) automates higher capacity migration using capacity transformation to remove logical drives by shrinking and then expanding them online. Standard drive migration and expansion remain unchanged. • Mirror Splitting and Recombining in Offline Mode breaks a RAID 1 configuration into two RAID 0 configurations. This is similar to a scaled down rollback functionality that requires two disk drives. • Drive Erase completely erases physical disks or logical volumes. This capability is useful when decommissioning, redeploying, or returning disk drives. • Video On Demand Performance Optimization optimizes performance of video on demand and improves latency during video streaming. More information about SAAP is available at www.hp.com/go/SAAP. NOTE: At a minimum, a 256 MB cache and battery kit is required to enable the SAAP license key. SAAP is not available on Zero Memory Configurations. 25