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Tag Archives: performance
FPIN – The Holy Grail of SAN Stability
As some of you may recall about a decade ago I made a proposal to incorporate more intelligence into the end-devices to be able to better react to...
tim_txcrd_z What is it? What does it represent?
I get a huge amount of questions and nervous customers who tell me they see this counter increasing at an alarming rate and want to know if this...
Upgrade to FOS 7.4.x fails due to APM performance monitors
As I’ve written before some features in FOS 7.3 and older have been superseded by new tools such as MAPS and FlowVision. On of those is also Advanced...
Performance misconceptions on storage networks
The piece of spinning Fe3O4 (ie rust) is by far the slowest piece of equipment in the IO stack. Heck, they didn’t invent SSD and Flash for nothing,...
Brocade Network Advisor Performance Graphs flatline
One of the regularly used features in BNA is the ability to retain performance numbers and a history of port errors. It is then most annoying when these...
1.1 – MAPS – Know what’s going on.
I’ve written about Fabric Watch quite a lot and I have always stressed the usefulness of this licensed add-on as a feature in FOS. This post will outline...
Cross-fabric collateral damage
Ever since the dawn of time the storage administrators have been indoctrinated with redundancy. You have to have everything at least twice in order to maintain uptime and...
Short stroking disk drives to improve performance
Reading a post from Hans DeLeenheer (VEEAM) which ramped up quite a bit including responses from Calvin Zito (HP), Alex McDonald (NetApp) and Nigel Poulton. The discussion started on a...
5 – Standard configuration options
Defaults On the switches there are some default settings which you should enable before taking it into production. First we enable virtual fabrics. (Some OEM’s have this enabled...
Queue-depth
I recently was involved in a discussion around QD settings and vendor comparisons. It almost got to a point where the QD capabilities were inherently linked to the...