JetStress 2013 failed

Posted on 2016-10-19
Last Modified: 2016-10-25
Hi Experts,

I have done a test for my EXCH2013 installation.
But this test failed.
See the picture.

What does the error mean ?
Question by:Eprs_Admin
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LVL 121
ID: 41850453
Datastore is too slow!

you have high read and write latencies.

Author Comment

ID: 41853432
ok but how can it be ?
It is a brand new system. from NUTANIX.
LVL 121
ID: 41853481
That's what the test states!

and you asked what does it mean. that's what it means.
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Author Comment

ID: 41853485
ok I will also check the other nodes and VMs

Author Comment

ID: 41856572
all nodes have the same issue, tested with one DB or 2 DBs.
LVL 121
ID: 41856585
so despite the test, is service okay and performance fine with end users ?

Author Comment

ID: 41857372
The support team told me to create one VMDK for each DB and LOG.
Do you agree ?

I did the test just with one DB and one LOG, each on an extra VMDK.
The test was successful.
LVL 121

Accepted Solution

Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 41857393
A virtual machine disk for database, and a virtual machine disk for logs, is the general best practice recommendation for Exchange.

So I would concur and agree.

Author Comment

ID: 41857408
ok tomorrow I create all the disks and test again with 3 DBs

Author Comment

ID: 41858167
Which DISK mode is better for the VMDKs ?

Masterboot Record or GPT ?
LVL 121

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 41858282
that depends on the size of disk you are creating MBT only supports up to 2TB

GPT up to 64TB.

So if you think you'll every need to expand above 2TB, create them as GPT, otherwise MBR ot GPT

Author Closing Comment

ID: 41858290
I created now for each DB location a seperate disk. And for each LOG location I also created a seperate disk.
I used for all GPT table.

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