PowerScale V015 Flashcards
What is ‘SDP’ Its acronym, and what its use is with PowerScale?
Streaming Data Platform
Used to Analyse real-time streaming data for business insight.
What is Apache Flink and how is it used by SDP
Apache Flink is a streaming or /and batch analytic applicaiton. It is primarily used in Powerscale by SDP.
What is ECS:
Elastic CLoud Service (Dells Version) Manages data storage:
It is a Scale Up and out architecture.
Read: https://www.dellemc.com/content/dam/uwaem/production-design-assets/fr-ch/events/forum/digital/2017/post-event/presentations/lausanne/storage-4.pdf
What is Isilon SRA
Its a “Storage Replicator Adaptor”
for VMware and VMware vCenter Site Recovery Manager (SRM)
SRA manages replication of VMware ESXi server what ? and where
on VMware ESXi server VM’s running on Isilon Clusters.
VMware SRM acronym? - And what in relation to DR does it do?
“Site Recovery Manager”
It helps with migration and disaster recovery of VM’s o Isilon Clusters.
What Vmware application does Powerscale SRA work with
It works with VMware SRM
What does the VAAI Acronym Mean
Vmware “vSphere API for Array Integration”
What does VAAI work with?
It integrates with Vmware vSphere
VMware vSphere and AAI with an Isilon Cluster allows what to happen with disks?
Clone virtual disks
Create Thick virtual disk files
Monitor Disk space
speed up VM operations performed for VMs stored on Isilon clusters.
What is the plug-in for OneFS to manage the disks ?
VAAI NAS integrated with VMware vSphere
What is VASA?
VMware “vSphere API for Storage Awareness”
What is EMC ESA ?
EMC Storage Analytics
What is vRealize Operations Manager
software product that collects information and capacity data from monitored software and storage resources.
What is ESA also known as?
EMC Storage Analytics Connector
What is integrated with what with ESA?
ESA Links VMware vRealise Operations Manager with the EMC Adapter.
What feature does the integration with ESA and vRealize enable?
It is used to monitor and analyze the performance and health of storage Application s.
What other specific Adaptor is bundled with the EMC Storage Analytics (ESA) Adapter?
An Isilon Adapter.
What does the Isilon Adapter eanble ESA to do?
collect performance metrics on an Isilon cluster.
What are components of the Isilon SD Edge?
Vmware, Isilon SD Management Server, and OneFs VM
What authenticaiton providers are used with oneFS
AD, LDAP, NIS, Local , File and MIT Kerberos
What supported client technologies are supported by OneFS?
NFS V3, NFS V4, SMB1, SMB2, SMB3, Hadoop?
What what % can a cluster or pool get slower performance or possible workflow interruptions?
90%
What happens when a cluster or pool approaches 98% ?
Slower performanced Failed file operatons inability to write data not able to perform configuration changes commands to free up space will fail inability to delete data unavailability failed autentication to connect/mount and navigate possible data loss.
How much space should you maintain free to allow the cluster to operate whilst planning storage upgrade?
15-20%
How can you monitor capacity ?
Configure Alerts
Use SmartQuotas
Run FSAnalyse Jobs
What are the size definitions of an Isilon Cluster?
Small: 3 and 32 nodes
Medium: 32 and 48 nodes
Large: 48 and 144 nodes
XL: 144 and 252 nodes
What network cards should you use if provisiooning an all-new cluster comprised of Gen6 nodes?
40Gb Ethernet backend
What fabric design should be used in large and extr alarge configurations?
Leaf Spine topology
Small Cluster - Min and Max
2 and 32 nodes
Medium Cluster - Min and Max
32 and 48 nodes
Large: Cluster - Min and Max
48 and 144 nodes
XL Cluster - Min and Max
144 and 252 nodes
How many ‘Tenants can oneFS Support?
50
What comprises a ‘Tenant’?
Subnet, Routing, DNS, Security Infrastructure
What does SmartPools do?
Separates data layout,
export and share level isolation
granular authentication
What are Access Zones
Provides granular authentication and access control.
In english this means using authentication services (AD/Samba/NIS/Kerberos (See previous quesiton earlier) to authenticate users access to data.
Why use SmartConnect?
it is used to partition networking (investigate further - possibly with VLAN tagging or ? ) good for separating tenants.
What is SyncIQ used for?
It is used for replication
What are the two high level designs for PowerScale based on layout and use case?
Data Lake
POD
How do you perform workload analysis?
Identify how applications work
How users interact with application
What is the network topology
What are the workload specific metrics (protocols, Drive I/O and CPU & Memory Usage)
What are the I/O characteristics you would look to analyse fir reviewing performance:
I/O data artes per node, per node pool and per network pool.
Understand read and write rates and the mix as a whole.
What command would you use to review the I/O requirements on an Isilon node and reviewing per protocol
isi statistics protocol –nodes all –top –orderby=timeavg’
How do you monitor disk latency
isi statistics drive –nodes all –top –long –orderby timeavg
How would you monitor the available disk transfer rates and identify performance degradation at disk level?
OneFS does not deliver data that deep inthe storage stacl.
Montiro the Busy%, Queued, TimeinAQ, and TimeAvg colums returned from the ‘isi statistics drive’ commands to judge if storage is being overwhelmed.
What are the core cluster sanity checks?
All nodes members of the group ‘ (sysctl efs.gmp.group)
If missing nodes what state are they in ? ro, SmartFailed, powered down) .
Do the base ‘isi’ commands work
Can you still write to the /ifs?
view log files in /var/log
ASs so many services depend on the OneFS platform API, how wouldyou check it is working ?
wget --no-check-certificate https://localhost:8080/platform/3/cluster/nodes isi status isi job jobs list check CELOG: isi event list
PowerScale Tiers:
Extreme Performance: (high perf, low latency)
What type of storage ? and the NODES ? (4)
All-Flash: F800 F810 F600 F200
PowerScale Tiers:
Performance: Transactional I/O
What type of storage? What models? (2)
SAS & SSD
H600
H5600
PowerScale Tiers: Hybrid/Utility:
Concurrency & Streaming Throughput
What type of storage? What models (2):
SATA/SAS & SSD
H500
H400
PowserScale Tiers: Archive
Nearline & Deep Archive
SATA
A200
A2000
What single type of disk must exist at least ‘once’ on all nodes?
SSD.
What is the maximum number of nodes OneFS will stripe across?
20 Nodes
What are the 3 Access Methods to administrate a cluster?
CLI (via ssh or serial console)
Web Interface (WebUI)
RESTful platform API (PAPI)
How do you keep up-to-date with current issues, bugs, security advisories?
Dell EMC Technical Advisories (ETAs)
Dell EMC Security Advisories
Sign UJp for regular updates at support.emc.com
What is the name of the cluster event log?
CELOG
What monitoring protocols and methods should you use for a larger cluster?
Using SNMP,
Cluster MIBs and traps into an NMS
Syslog and Cluster Logifle Monitoring
ESRS phone-home monitoring & Support
When to start 1) planning, 2) receiving delivery and 3) installing new nodes due to used capacity matching threshold
75% Plan
80% Receive Delivery
85% Rack & Install
