Dell PowerVault 221S (SCSI) - Manual (Page 26)

A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02
PAGE 26 11/17/2005
Cable Connector Controller Connector
P-type connector – Male
P-type connector – Female
VHDCI-type connector – Male
VHDCI-type connector – Female
• Figure 4-7 External SCSI Connector
PV22xS Configuration Topology and Application Attributes
PV22xS provides different configuration topologies, which may impact the storage solution
for an application. All PV22xS configuration modes have various benefits for application
attributes and are summarized as depicted in Table 4-1 and Table 4-2:
• Table 4-1: PV22xS Configuration Topologies Vs Application Attributs
PV22xS Configuration Topologies
Application
Attributes
Joined Split Cluster
Reliability Default Default Default
Availability Default
Relatively better than
Joined topology –
depending on RAID
level (see Table 4-2 for
details)
High
Serviceability All interconnect components are Field Replaceable units
Redundancy
• Not on SCSI
Path
• Management
capabilities with
both ZEMMs
• Not on SCSI Path
• Management
capabilities with
both ZEMMs
Provides both data
and management
Performance
Depends on HDD and ZEMM technology –
U160/U320
Relatively lower
performance due to
RAID controller
configuration
requirements
Data
Protection
Default Default Default
Scalability Maximum
Minimum (for a given
topology) Same as Joined, but
one HDD less
Cost
Could be lower with
Single ZEMM and
non-redundant PSU
Requires two ZEMMs, but can be lower with
non-redundant PSU