QuickSpecs

High Availability/ Fault
High Availability/ FaultHigh Availability/ Fault
High Availability/ Fault
Tolerance/
Tolerance/Tolerance/
Tolerance/
Hot pluggable support
Hot pluggable supportHot pluggable support
Hot pluggable support
All EVA are configured with dual HSV controllers that operate in a redundant mode. Each controller has
redundant Fibre Channel (FC) host ports (2 for the EVA4000/6000 and 4 for the EVA8000). Each
EVA4000/6000 controller has two FC device ports and the EVA8000 controller has four FC device
ports. For the EVA4000/6000/8000 in the event of a path failure, the alternate paths to the controller
can be utilized with the use of multi-path software in the Operating System or in Secure Path software.
On the EVA4000 each port connects to one FC I/O module on a drive enclosure. Up to four drive
enclosures can be connected in a FC loop arrangement with a controller pair and connect to one port of
up to 56 drives. With the two FC ports per controller, each controller can connect to both ports on up to
56 disk drives for redundant paths to all 56 drives. On the EVA6000 each port connects to a FC loop
switch which in turn connects to one FC I/O module on up to nine drive enclosures and to one port of up
to 112 disk drives. On the EVA8000 each port connects to a FC loop switch which in turn connects up to
one FC I/O module on up to nine drive enclosures and to one port of up to 120 disk drives. With the
four FC ports, each controller can connect to both ports on up to 240 disk drives for redundant paths to
all 240 drives.
EVA8000 configurations, with more than four drive enclosures, are configured with two pairs of FC-AL
switches connected between the two controllers and the drive enclosures. Up to nine drive enclosures can
be redundantly connected to each pair of switches, which are redundantly connected to each controller.
Each loop switch is independently powered and cooled. Should one loop switch fail, it can be replaced
while I/Os continue through the remaining redundant loop switch.
The HSV controllers also have dual redundant hot plug power supplies and dual redundant hot plug
blowers. Each controller has hot plug cache batteries to maintain cache contents for up to 96 hours in
case of a total power failure.
The M5314B FC drive enclosure has dual redundant hot plug FC I/O modules that allow the controllers
to distribute I/Os between the two modules and provides redundant paths should either FC I/O module
become unavailable. The enclosure also has dual redundant hot plug power supplies and dual hot plug
blowers. The enclosure also has a hot plug Environmental Monitoring Unit (EMU) to monitor and report
the condition of the power supplies and fans. The EMU can be replaced without affecting I/O operations.
The FC and FATA disk drives have dual FC ports which can be redundantly accessed by each controller.
The drives are hot plug. The drives can be arranged, using redundant Vraid1 or Vraid5 protection, so
that a drive failure will not cause loss of data. Optional virtual sparing can be configured so that a drive
failure will trigger an automatic rebuild of the Vraid1 or Vraid5 protection using the virtual spare.
All EVAs have dual redundant power distribution. Two independent power cords distribute power through
two Power Distribution Units (PDUs) to each side of the EVA cabinets and to each power supply of the
controllers and to each power supply of the drive enclosures and to each of the FC loop switches. Each
cabinet power cord can be connected to independent power sources. For maximum availability, a
customer should provide redundant power from independent power circuit breakers, independent power
lines from the power company and even independent power companies.
Integration
IntegrationIntegration
Integration All EVA4000/6000 /8000 models are 4 Gb/s FC Switched Fabric "enabled" and can operate on 4 Gb/s
or 2 Gb/s FC Switched Fabric SANs. They can co-exist in the same FC SAN with EVA3000 and
EVA5000 FC storage solutions and many other SAN devices.
QuickSpecs
HP StorageWorks Enterprise Virtual Array Family
HP StorageWorks Enterprise Virtual Array FamilyHP StorageWorks Enterprise Virtual Array Family
HP StorageWorks Enterprise Virtual Array Family
Product Highlights
DA - 12408 North America — Version 2 — April 3, 2006 Page 10