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PowerScale V015 Flashcards

1
Q

What is ‘SDP’ Its acronym, and what its use is with PowerScale?

A

Streaming Data Platform

Used to Analyse real-time streaming data for business insight.

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2
Q

What is Apache Flink and how is it used by SDP

A

Apache Flink is a streaming or /and batch analytic applicaiton. It is primarily used in Powerscale by SDP.

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3
Q

What is ECS:

A

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

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4
Q

What is Isilon SRA

A

Its a “Storage Replicator Adaptor”

for VMware and VMware vCenter Site Recovery Manager (SRM)

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5
Q

SRA manages replication of VMware ESXi server what ? and where

A

on VMware ESXi server VM’s running on Isilon Clusters.

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6
Q

VMware SRM acronym? - And what in relation to DR does it do?

A

“Site Recovery Manager”

It helps with migration and disaster recovery of VM’s o Isilon Clusters.

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7
Q

What Vmware application does Powerscale SRA work with

A

It works with VMware SRM

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8
Q

What does the VAAI Acronym Mean

A

Vmware “vSphere API for Array Integration”

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9
Q

What does VAAI work with?

A

It integrates with Vmware vSphere

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10
Q

VMware vSphere and AAI with an Isilon Cluster allows what to happen with disks?

A

Clone virtual disks
Create Thick virtual disk files
Monitor Disk space
speed up VM operations performed for VMs stored on Isilon clusters.

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11
Q

What is the plug-in for OneFS to manage the disks ?

A

VAAI NAS integrated with VMware vSphere

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12
Q

What is VASA?

A

VMware “vSphere API for Storage Awareness”

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13
Q

What is EMC ESA ?

A

EMC Storage Analytics

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14
Q

What is vRealize Operations Manager

A

software product that collects information and capacity data from monitored software and storage resources.

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15
Q

What is ESA also known as?

A

EMC Storage Analytics Connector

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16
Q

What is integrated with what with ESA?

A

ESA Links VMware vRealise Operations Manager with the EMC Adapter.

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17
Q

What feature does the integration with ESA and vRealize enable?

A

It is used to monitor and analyze the performance and health of storage Application s.

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18
Q

What other specific Adaptor is bundled with the EMC Storage Analytics (ESA) Adapter?

A

An Isilon Adapter.

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19
Q

What does the Isilon Adapter eanble ESA to do?

A

collect performance metrics on an Isilon cluster.

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20
Q

What are components of the Isilon SD Edge?

A

Vmware, Isilon SD Management Server, and OneFs VM

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21
Q

What authenticaiton providers are used with oneFS

A

AD, LDAP, NIS, Local , File and MIT Kerberos

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22
Q

What supported client technologies are supported by OneFS?

A

NFS V3, NFS V4, SMB1, SMB2, SMB3, Hadoop?

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23
Q

What what % can a cluster or pool get slower performance or possible workflow interruptions?

A

90%

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24
Q

What happens when a cluster or pool approaches 98% ?

A 
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.
25
Q

How much space should you maintain free to allow the cluster to operate whilst planning storage upgrade?

A

15-20%

26
Q

How can you monitor capacity ?

A

Configure Alerts
Use SmartQuotas
Run FSAnalyse Jobs

27
Q

What are the size definitions of an Isilon Cluster?

A

Small: 3 and 32 nodes
Medium: 32 and 48 nodes
Large: 48 and 144 nodes
XL: 144 and 252 nodes

28
Q

What network cards should you use if provisiooning an all-new cluster comprised of Gen6 nodes?

A

40Gb Ethernet backend

29
Q

What fabric design should be used in large and extr alarge configurations?

A

Leaf Spine topology

30
Q

Small Cluster - Min and Max

A

2 and 32 nodes

31
Q

Medium Cluster - Min and Max

A

32 and 48 nodes

32
Q

Large: Cluster - Min and Max

A

48 and 144 nodes

33
Q

XL Cluster - Min and Max

A

144 and 252 nodes

34
Q

How many ‘Tenants can oneFS Support?

A

50

35
Q

What comprises a ‘Tenant’?

A

Subnet, Routing, DNS, Security Infrastructure

36
Q

What does SmartPools do?

A

Separates data layout,
export and share level isolation
granular authentication

37
Q

What are Access Zones

A

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.

38
Q

Why use SmartConnect?

A

it is used to partition networking (investigate further - possibly with VLAN tagging or ? ) good for separating tenants.

39
Q

What is SyncIQ used for?

A

It is used for replication

40
Q

What are the two high level designs for PowerScale based on layout and use case?

A

Data Lake

POD

41
Q

How do you perform workload analysis?

A

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)

42
Q

What are the I/O characteristics you would look to analyse fir reviewing performance:

A

I/O data artes per node, per node pool and per network pool.

Understand read and write rates and the mix as a whole.

43
Q

What command would you use to review the I/O requirements on an Isilon node and reviewing per protocol

A

isi statistics protocol –nodes all –top –orderby=timeavg’

44
Q

How do you monitor disk latency

A

isi statistics drive –nodes all –top –long –orderby timeavg

45
Q

How would you monitor the available disk transfer rates and identify performance degradation at disk level?

A

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.

46
Q

What are the core cluster sanity checks?

A

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

47
Q

ASs so many services depend on the OneFS platform API, how wouldyou check it is working ?

A 
wget --no-check-certificate https://localhost:8080/platform/3/cluster/nodes
isi status
isi job jobs list
check CELOG:
isi event list
48
Q

PowerScale Tiers:
Extreme Performance: (high perf, low latency)
What type of storage ? and the NODES ? (4)

A 
All-Flash:
F800
F810
F600
F200
49
Q

PowerScale Tiers:
Performance: Transactional I/O
What type of storage? What models? (2)

A

SAS & SSD
H600
H5600

50
Q

PowerScale Tiers: Hybrid/Utility:
Concurrency & Streaming Throughput
What type of storage? What models (2):

A

SATA/SAS & SSD
H500
H400

51
Q

PowserScale Tiers: Archive

Nearline & Deep Archive

A

SATA
A200
A2000

52
Q

What single type of disk must exist at least ‘once’ on all nodes?

A

SSD.

53
Q

What is the maximum number of nodes OneFS will stripe across?

A

20 Nodes

54
Q

What are the 3 Access Methods to administrate a cluster?

A

CLI (via ssh or serial console)
Web Interface (WebUI)
RESTful platform API (PAPI)

55
Q

How do you keep up-to-date with current issues, bugs, security advisories?

A

Dell EMC Technical Advisories (ETAs)
Dell EMC Security Advisories
Sign UJp for regular updates at support.emc.com

56
Q

What is the name of the cluster event log?

A

CELOG

57
Q

What monitoring protocols and methods should you use for a larger cluster?

A

Using SNMP,
Cluster MIBs and traps into an NMS
Syslog and Cluster Logifle Monitoring
ESRS phone-home monitoring & Support

58
Q

When to start 1) planning, 2) receiving delivery and 3) installing new nodes due to used capacity matching threshold

A

75% Plan
80% Receive Delivery
85% Rack & Install

Dell (3 decks)

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