End User

End User Complaint

Application Team

Server Team

Architect Team

Application Team
Investigate

Server Team
Investigate

Workload
Assessment

ReviewCPU& Memory Requirement

New

Workload
Assessment

Review SLA

Review
Application
Event Log

Resolve
Application
Issue

Read/Write?
Sequential vsRandom
IO Size ?

NOTOKReview
System EventLog or /var/log

Review
Application andStorage Vendor Best Practises

Application
still having
Performance
Issue

Aggregate Utilization

Storage Team

Architect Team

Storage Team
Investigate

Open aNetApp Case

Review IMTReview Controller
Performance

Open aPerformancecase

Review AggrUtilization

Existing

What haschangedStorage Team (Controller Performance)

Review
NetApp FC/
iSCSI HUK,relevant MS
Hotfixes andLinux/Unix
Hotfixes

NetApp DSM

NodeUtilization
Greater than85%

For an SLA wherelatency impact
during TO is anacceptable risk
Maintain HA
combined NodeUtilization lessthan 150%

Review MPIO
Configuration

Microsoft
MPIO{Make sure its
set to LQD}

For an SLA of nolatency impact
during TO
Maintain HA
combined Node
Utilization lessthan 100%

Review
Mulitpath on
Linux/Unix

Review HBA
Queue Depth

Calculate
the total
number ofQueue
Depth forall thehosts

Tune HBA
Queue Depth
if necessaryReview DiskUtilization

Reviewwhether wehave enoughtarget port.

Only applies to SAS and SATA only

You must capture theperiod during theperformance hit.

Is the loadbalance acrossall Nodes

Aggregate
Disk busy
greater than50%

NOTOK> 50%

Review Process
Perform a volume
move to another
NodeNo

Review IOPSOpen Apps/OS Vendor
Case

Did Application
Improve

Can we clamp theapplication down with QoS
Yes

NOT
OKYes

Review the Performance

Case Closed

Thereafter, upload theperfstat to the caseowner

Add more
Target Ports

Perform a QoS
against the
LUN orVolume

SSD can yield as highas 82000 IOP/s
SAS random accesstime ~7ms
Gives ~120 IOP/s perdata spindle
SATA random accesstime ~10ms
Gives ~80 IOP/s perdata spindle

OKPerformance OKConsider moving
the load to otheraggregate or
Node

Not Balanced

Maintainaggregateutilization lessthan 50%

Review the Performance

NotOK

Run the perfstat on thehost where there is a
performance issue withthe controller.

Target Queue
Depth Port is2048

The load is balanced
across multiple nodes
Case Closed

NOTOK

Case Closed

IOPS required exceed
the number of dataspindles. Considerbuying more disk
spindles or move theload to SSD

Case Closed

NoOpen asoftware
Vendor CaseEngage Duty
Manager if
issue is not
resolved withinsatisfaction

HBA Firmware

SAN Switch
FirmwareController
ONTAP
versionEnd User

End User Complaint

Application Team

Server Team

Application Team
Investigate

Server Team
Investigate

Workload
Assessment

Review
CPU& Memory
Requirement

New

Workload
Assessment

What haschanged

Review
Application
Event Log

Resolve
Application
Issue

Case Closed

Read/Write ?
Sequential vsRandomIO Size ?
Review
Applicationand Storage
Vendor - Best
Practises
Application
still having
PerformanceIssueNOTOK

Review SLA

For an SLA
where latency
impact during TO
is an acceptablerisk
Maintain HA
combined NodeUtilization lessthan 150%
Maintainaggregateutilization lessthan 50%Hyper-V

Ensure VSC
is properly
configured on
all ESX
Hosts

Ensure allnecessary
hotfixes areapplied

EnsureJumbo Frameis enabledfrom theHosts to theControllers

Review the
Performance
Performance OK
Case Closed

Review Controller
Performance

For an SLA of nolatency impact
during TO
Maintain HA
combined Node
Utilization lessthan 100%OS(Ensure all
OS tuningare in place)

VmwareStorage Team (Aggregate Utilization)

Storage Team
Investigate

ReviewSystem
Event Log or/var/log

Existing

Storage Team (Controller Performance)

Architect Team

Perform a
volume move toanother Node

Ensure NFS
mounts areproperly
configured
based onbest
practises

Add more
10gE Ports
to the SVM

The load is balanced
across multiple nodes

Can we clamp theapplication down withQoS
NOTOK

Review the Performance
NOTOK

Case Closed

Yes

Perform a
QoS against
the LUN orVolume

Review IOPS

SSD can yield as highas 82000 IOP/s
SAS random access time~7ms
Gives ~120 IOP/s per dataspindleSATA random access time
~10ms
Gives ~80 IOP/s per dataspindle

IOPS
requiredexceed thenumber ofdata
spindles.
Considerbuying moredisk spindles
or move theload to SSD

Review IMTOpen aPerformance
caseUCS
Firmware

You must
capture theperiod during
theperformance
hit.

Review Process

No

Performance is OK
Open Apps/OS Vendor
Case

Only applies to SAS and SATA only
ConsiderAggregate
moving the
Disk busy
load to othergreater than
> 50% aggregate or50%
NodeIs the loadbalanceacross all
Nodes

Open aNetApp CaseRun theperfstat on
the host
where thereis aperformanceissue withthecontroller.

Review Disk
Utilization

Not Balanced

Native OS

Ensure NFS
mounts areproperly
configured
based onbest
practises.
Pleasereview Best
Practises
Guides on
NFS
NotOK

Ensure that
we are notsaturating
the 10gE
link.

Architect Team

NOTOK

Review AggrUtilization

Node
Utilization
Greater than85%

Storage Team

Application
Improve

YES

Case Closed

NOOpen asoftwareVendorCase

Thereafter,
Engage Duty
uploadthe if
Manager
perfstatissue istonot
theresolved
caseowner
withinsatisfaction

Controller
ONTAP
versionhttp://www.cisco.com/en/US/docs/storage/san_switches/
mds9000/sw/rel_3_x/troubleshooting/guide/ts_guide.pdf