This week I’ve been working on two interesting (ish) problems. Well, one more interesting than the other, one a case of the vendor needing to think about requirements more.
Firstly, Tuning Manager (my old software nemesis) strikes again. Within Tuning Manager it is possible to track performance for all LUNs [...]
Here’s the last of the performance measurements for now.
Logical Disk Performance – monitoring of LDEVs. There are three main groups Tuning Manager can monitor; IOPS, throughput (transfer) and response time. The first two are specific to particular environments and the levels for those should be set to local array performance based on historical measurement [...]
Next on the performance hitlist is port tracking. This one is slightly more tricky to collect in Tuning Manager as HTnM uses absolute values for port throughput (Port IOPS and Port Transfer) in alerting, rather than relative values like % busy. This is a problem because the figures of both IOPS and throughput (KB/MB/s) will [...]
Stephen commented about Tuning Manager and doing something useful with the data. I thought I would use this as an opportunity to highlight some of the things I look at on a regular basis (almost daily, including today in fact). Part I – Write Pending.
First a little bit of background; Write Pending [...]
I’ve been working with the HiCommand Tuning Manager CLI over the last few days in order to get more performance information on 9900 arrays. Tuning Manager (5.1 in my case) just doesn’t let me present data in a format I find useful, and I suppose that’s not really surprising as, unless you’re going to add [...]
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