Midrange Storage Performance Planning: Network Connectivity Considerations Flashcards
How show front end ports be connected across both Unity and Powerstore?
connected and configured symmetrically across both nodes/procs
facilitates high connectivity and availability
What is a failure domain?
section of the network that is negatively affected when network/critical device experiences problems
What does the impact of a failure domain depend on?
device or service that is malfunctioning
What is the recommended load balancing technique for Dell storage?
using all front end ports - distributes workloads across as many resources as possible
zone different hosts to different ports
How should you connect FC to Powerstore?
configure dual redundant fabrics
each Powerstore node and external host must have connectivity on each of the fabrics - minimizes hops
How should you connect Ethernet in Powerstore?
use multiple switches that are connected with VLTi and LACP
each Powerstore node should have connectivity to each linked switch
What is VLTi?
Virtual Link Trunking interconnect
enables VLT for the layer 2 connection - logical single view to connected devices
What is LACP?
Link Aggregation Control Protocol
method to control the bundling several physical ports to form a logical channel
What is the relation between Powerstore and LACP bonds?
first two ports of embedded 4 port card are bonded together
recommended to configure link aggregation across switch ports for performnace/availability
What are the requirements when using Ethernet for block connectivity on Powerstore?
each host must have atleast two paths to each Powerstore node
recommended host have no more than 8 active paths to a volume
What are the components per storage processor enclosure on Unity XT 380?
2x onboard 10G BASE-T ports
2x CNA ports for 8/16Gb FC or 10GbE optical iSCSI
2x option IO Modules for front end connectivity
What do the onboard 10G Base T ports support on Unity XT 380?
support 10GbE or 1GbE for block iSCSI and file IP
support custom MTU frames
What are the components per storage processor enclosure on Unity XT 480 and higher?
4 port Mezz Card for 25/10GbE or 10G BASE T
2x IO Module slots for front end connectivity
What does the4 port Mezz Card for 25/10GbE support on Unity XT 480 or higher?
supports speeds of 25/10/1GbE
What is true about FC ports on Unity XT?
can negotiate down to lower speed
What are the options for configuring CNAs/FC IO modules on Unity XT?
8/16/32Gb SFPs
What model of Unity XT comes with CNA ports?
Unity XT 380
supports 4/8/16Gb speeds
What are the configuration options for 32Gb FC 4 port IO Module on Unity XT?
16Gb/32Gb
can support 8/16/32Gb speeds
32Gb recommended for best performance
What is true about SFPs in Unity XT?
can be mixed within the same IO modules
matching the peer is recommended
What type of zoning is recommended with FC connectivity on Unity XT?
single-initiator zoning when creating zone sets
What is Dell PowerPath?
multipathing software on hosts connected over FC/iSCSI - provides path redundancy and load balancing
What are the options for iSCSI networks w/ Unity XT?
10G/1G - can autonegotiate down