HDS announced today a few amendments to the AMS/WMS range. The most interesting is the apparent ability to power down drives which are not in use a-la-Copan.
According to the press release above, the drives can be powered down by the user as necessary, which presents some interesting questions. Firstly, I guess [...]
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 [...]
Hitachi has announced (10th September) the availability of a new storage array, the USP-VM. At first glance this appears to be the USP-V equivalent of the NSC55 as it has very similar characteristics in terms of cache cards, FEPs etc. Unfortunately HDS have provided links to specification pages not all of which include [...]
After the recent EMC announcements on DMX-4, I promised I would look at the question of whether the new DMX-4 is really as green as it claims to be. I did some research and the results are quite interesting.
Firstly we need to set the boundaries. One of the hardest part of comparing [...]
I’ve been using the HiCommand CLIEX (the extended CLI) today. It differs from the normal CLI in that it talks directly to the array via a command device and bypasses both Storage Navigator and Device Manager. HDS have needed this way of communicating with an array for a long time.
On the one hand, CLIEX [...]
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 [...]
Has anyone tried to use the HiCommand database transfer command (hcmdsdbtrans)? You can use it to export the contents of a database for later re-importation.
I’ve been looking at it as a way to get a Device Manager test environment, or to get a configuration between sites where there’s no IP connectivity. The command produces [...]
EMC recently announced the release of ECC (ControlCenter) version 6.0. This version finally meets customer demands for VMware support (which despite the fact EMC own VMware is a long time coming) plus a whole host of other enhanced reporting.
I did a lot of work recently on virtualisation of storage tools using [...]
A while back, I commented on how CCI was a pain in the proverbial **** because specifying the replicated LUNs required them to be presented onto a port/HSD. Snig kindly pointed out that although the LDEV needs to be presented, you can now just use the LDEV number rather than the complicated [...]
For those people who use TrueCopy on a daily basis, you’ll know that the assignment of a TrueCopy pair is based on a source and target storage port, host storage domain and LUN. This means a LUN has to be assigned out to replicate it.
The part that has always worried me is [...]
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