Re: Multiple Hosts, Multiple Datastores
Testing iSCSI storage could be a bit tricker than FC SAN storage because users often fell into network configuration problem. I think you can try both 1 host-1 datastore and 3 host-3 datastores tests...
View ArticleI/O analyzer results translation help
hello guys,im new to this and just purchased a raid 6405 card (4 SATA WD RED 2TB Drives) in raid 5 config with 256k stripe with esxi 5.1 free edition. Is there a primer sheet where i can get what are...
View ArticleRe: I/O analyzer results translation help
At the top of that screen shot you can see that you selected to run a 100% read workload, so a very small number of writes (basically enough to record the data) is expected.
View ArticleRe: I/O analyzer results translation help
thanks for the reply. How do my READS look based on my raid controller and SATA drives? how about a guide that explains the columns?
View ArticleRe: I/O analyzer results translation help
It looks like your reads are being satisfied entire by the cache on the card, because 4 SATA drives can't push 38K IO/s (generally assum around 70-90 IO/s for SATA drives). You need a workload thats...
View ArticleRe: I/O analyzer results translation help
The one you have selected, OLTP 8k, is a mixed workload, for example.
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Re: I/O analyzer results translation help
ok ran that test for 6 min and these are the results. numbers seem very low to me. Can you let me know? Thanks
View ArticleRe: I/O analyzer results translation help
Thats closer to what I'd expect. 250 IO/s for a RAID5 set of low performance SATA drives without a write cache is pretty normal. You are being mostly limited by your response times (DAVG/cmd), but...
View ArticleRe: I/O analyzer results translation help
sorry meant to say raid 5 (3 disks) and 1 hot spare. I was worried about the MBPS Read and Write results which seem very low to me. thanks for all the help, I really appreciate it. Is there a white...
View ArticleRe: I/O analyzer results translation help
Then I'd call those results very good. The MBPS rates are low because you are doing small block (8k) IO...its expected. I have no white paper.
View Article(Experimental) Scheduling Tests via HTTP Commands
IntroductionIn I/O Analyzer 1.5.1, we have introduced an experimental new feature, which allows users to schedule tests via HTTP commands. The idea of such an interface is to provide a mean of...
View ArticleUnable to add workload entry
Curious to know if you have any input on a problem in which we can successfully add the ESX hosts while in the “master” analyzer VM and the I/O Analyzer VMs are correctly listed from the ESX hosts...
View ArticleRe: Unable to add workload entry
Just had a few mails with Mark and it looks like the problem is because of cloning IOAnalyzer VMs. Mark, please let us know if you think there's some improvement we can make on this issue....
View ArticleRe: Unable to add workload entry
Thanks again for the quick reply on this one. Not sure I would spend much time trying to figure out why the clone operation seemed to possibly cause the problem as it was very easy to just deploy from...
View ArticleProblem: Trace characteristics display no charts
I had uploaded a remote trace file, the io analyzer notified me a successful result, but Trace characteristics display no charts:Workload Name : exchange_loaddfdfTrace duration is 0 SecondsTrace...
View ArticleWhat do the fields in a trace file mean?
The vscsiStats help says:"- trace contains NO customer sensitive data- only information recorded is: - serialnumber, IO block size, number of scatter-gather elements -...
View ArticleRe: How i get rid of of old test results
By IO analyzer 1.5.1, after the test result was archived, I can't find the archived report under /var/www/archives directory, but it was still under /var/www/expts directory, but using "." prior to...
View ArticleNFS Device Statistics
I'm currently working on validating a new vSphere 5.1 environment predicated on 10Gbit NFS. When I'm using resxtop I can see the device statistics for the NFS volumes (CMD/s, READS/s,WRITES/s,...
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