Promise RAID Processor with XOR engine for RAID parity calculations and memory controller for local cache memory
Cache memory: 64MB ECC
FRAM for RAID 5 tra
Additional Specification :
> #Automatic/manual rebuild of hot spare drive #Variable stripe block size support enables optimization for diverse application requirements #Seamless upgrade to Promises external storage solutions #Controller Specifications:
#Drive support: Upto 4x Ultra ATA/133 drives #Storage capacity: Upto 1 TB (with 4x 250GB drives) #Bus type: 32-bit 66MHz PCI bus; PCI 2.2 compliant #Promise RAID Processor with XOR engine for RAID parity calculations and memory controller for local cache memory #Cache memory: 64MB ECC #FRAM for RAID 5 transaction log to avoid data corruption in the event of application hangs #Built-in GPIO ports for enclosure management
#RAID Levels Supported:
#RAID 0: Data striped across 2~4 drives for increased performance but no data protection #RAID 1: Mirrored pairs of drives for data protection with increased read performance #RAID 5: Striped parity on 3~4 drives, ultimate data protection, capacity and performance balance #RAID 10: Data mirrored then striped across four drives, for double drive failure protection #JBOD: Just a Bunch of Drives, independent connected drives with no RAID interconnection
#RAID Fault Tolerance and Robustness Features:
#Online array expansion and RAID level migration to add capacity on the fly #PerfectRAID technology for error handling and recovery of fatal, media and disk errors #DRM (Drive Roaming Metadata) technology:
#Supports upgrade to any Promise storage sub-subsystem #Supports drive roaming to any port on the controller #Allows array roaming in the event of controller failure
#Support hot swap of failed drives and hot spare #Automatic/manual rebuild of hot spare drive #Background initialization for instant drive availability #Background rebuild, migration and synchronization #Error and event logging #Variable stripe block size support to meet various application requirements #Optimal disk utilization with gigabyte rounding #Support for SMART capable drives #Synchronization can be
