Dell PowerVault 221S Optimizing Dell SCSI Solutions - Page 40

A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • Table 6-1: Typical Storage Recommendation for Different Storage Applications Application Servers Key Parameters Email * Availability * Performance * Scalability Database * Availability * Performance Web * Performance On-line * High Transaction Availability File * Scalability Streaming Media * Performance Storage Recommendations RAID Level PV22xS Host Controller RAID10 Provides both Availability and performance Cluster Topology Scalable and high availability For added performance enable Write back cache, if available on PERC RAID10 Provides highest availability of all other RAID levels Cluster Topology Provides availability of all PV22xS topologies If added performance is required enable Write back cache, if available on PERC RAID0 in Web Server farms Provides maximum performance of all RAID levels Split Topology Spanning RAID0 across channels provides best performance PERC, with read ahead capabilities for added performance boost RAID10 Provides highest availability of all other RAID levels Cluster Topology Provides availability of all PV22xS topologies For added performance enable Write back cache, if available on PERC and data protection at PERC level RAID5 Maximizing storage with some data protection Joined Topology Provides maximum scalability PERC with Global Hot Spare will improve availability for RAID5 RAID0 Provides maximum performance of all RAID levels Split Topology Spanning RAID0 across channels provides best performance PERC, with read ahead capabilities for added performance boost Remarks Recommendation targets a typical Enterprise Email Server Performance requirements for DB servers depend on number of users Web server farms, usually have multiple servers providing replicated web data. Thus, data availability is handled at server level Recommendation targets Enterprise applications which require higher availability than performance. In general for all OLT data protection is of utmost importance These servers usually have data backed up periodically and hence, require minimum data protection from Storage components Performance is of utmost importance for Streaming media servers. Data on these servers is usually backed up on external medias such as Tape libraries or optical medias CD/DVD PAGE 40 11/17/2005