Los sistemas de almacenamiento enterprise no suelen facilitar la recolección de datos para medir el rendimiento de los distintos subsistemas a través de protocolos abiertos, por ejemplo mediante consultas SNMP. Si un sistema necesita ser monitorizado para abordar un problema de rendimiento, realizar un estudio de utilización o la obtención de datos para un plan de capacidad, deberá adquirir un producto licenciado aparte, como Tuning Manager en el caso de sistemas Hitachi.
-Fig1.Esquema interno de Hitachi VSP-
Para los modelos de cabinas Hitachi 9900V / USP / NSC55 / USP-V / USP-VM / VSP existe una alternativa: Export Tool – ésta herramienta va incluida en el CD que contiene el microcódigo instalado en la cabina, de forma que cada versión de microcódigo tiene su versión específica-. Se trata de una aplicación java (multiplataforma) que se ejecuta desde la línea de comandos desde un equipo con conectividad LAN con la SVP de la cabina y que obtiene los estadísticas de rendimiento en ficheros con formato CSV. El hecho de que no disponga de una interfaz gráfica, que su configuración no sea trivial, junto con que esté casi escondida entre los CDs de soporte hace que no sea demasiado utilizada por administradores.
Todo lo que se observa desde Perfomance Monitor – elemento de la herramienta de administración Storage Navigator incluida entre el conjunto de herramientas básicas de gestión (Hitachi Basic Operating System)-, puede ser almacenado en ficheros csv mediante Export Tool. Performance Monitor proporciona detalles en profundidad del rendimiento de todos los elementos del sistema, incluyendo discos, volúmenes, procesadores, cache, puertos, etc. Incluso permite monitorizar el estado de copias remotas y locales de Mainframe y Open. Es la herramienta de troubleshooting y análisis esencial para la resolución de problemas de rendimiento en sistemas Hitachi 9900V / USP / NSC55 / USP-V / USP-VM / VSP. Su uso es bajo demanda y no permite monitorizar y generar alertas en modo desatendido.
Usando Performance Monitor y Export Tool
El primer paso es habilitar la recolección de estadísticas desde la pestaña de Performance Monitor (PM) en Storage Navigator. PM dispone dos tipos de rangos para recoger y almacenar estadísticas del sistema:
– short range: Permite definir un intervalo de entre cada toma de datos (entre 1 y 15 min) y guarda 1440 muestras.
– long range: Recolecta datos al intervalo fijo de 15 min entre cada adquisición y los almacena durante 3 meses.
La instalación de Export Tool es tan sencilla como descomprimir un paquete en un directorio. El programa java lee el archivo de configuración “command.txt”. Sobre este fichero se definen los elementos sobre los que se quiere extraer información y el subconjunto de tiempo, si no se quiere disponer de todos los valores almacenados. Además existen otros modificadores para presentar la información comprimida, decidir si se sobreescribe en el directorio de salida, etc.
Los tipos de valores se guardan organizados en formato csv son:
– Valores relativos : Tasa de utilización del recurso (en %). Obtenidos mediante un cálculo interno. Los archivos con estos datos tienen el prefijo "Phy" (PHYSICAL).
– Valores absolutos : Contienen valores medidos en el recurso durante el intervalo especificado (IO/sec, KB/sec, …)
Para los valores relativos existe una regla práctica (publicada en el portal de soporte de HDS) definiendo los umbrales de utilización aconsejados :
– Front end CHP utilization should be less than 70%.
– Back end DKP utilization should be less than 50%.
– Write Pending should average less than 30%.
– Array Group utilization should be less than 50%.
– LDEV utilization depends on the response time requirements of the application. To provide good response times, utilization should be below 50%.
A partir de aquí pueden definirse alertas sobre elementos según estos umbrales y realizar una redistribución de recursos en el sistema de almacenamiento para equilibrarlos, por ejemplo para un distribución de los puertos de fibra entre los hosts con mayor actividad o distribuir volúmenes en parity groups menos utilizados.
Los valores absolutos permiten representar “los números” de nuestro sistema de almacenamiento: IO/sec, KB/sec y representar gráficamente de forma sencilla el comportamiento de sistemas y aplicaciones a lo largo de un periodo de tiempo, por ejemplo las últimas 24h o la evolución de la carga semanal.
Recoger estos valores de forma periódica permite disponer fácilmente de la evolución del uso del almacenamiento en el tiempo, comparando estadísticas entre meses, años, etc. A partir de aquí, la imaginación y la destreza de cada uno para manejar este tipo de archivos y su representación gráfica o la integración con otras herramientas (splunk, nagios, pnp4nagios, …) marcan el límite.
About Jose Luis Viñas
10+ years experienced IT systems engineer (5+ working in critical environments). Strong background delivering quality and reliable services based on client needs and providing rapid responses to user requests. Focus on UNIX systems, storage infrastructure and backup systems.
- Web |
- More Posts(2)
Hi, I do think this is an excellent blog. I stumbledupon it 😉 I’m going
to come back yet again since I book-marked it. Money and
freedom is the best way to change, may you be rich and continue
to guide others.
Thanks very nice blog!
Hello! I know this is kinda off topic but
I was wondering which blog platform are you using for this site?
I’m getting sick and tired of WordPress because I’ve had problems with
hackers and I’m looking at options for another platform.
I would be awesome if you could point me in the direction of a good platform.
Thank you for sharing your thoughts. I really appreciate your efforts
and I am waiting for your further post thank
you once again.
Today, while I was at work, my sister stole my iPad
and tested to see if it can survive a twenty five foot drop,
just so she can be a youtube sensation. My apple ipad is now broken and she has 83 views.
I know this is entirely off topic but I had to share it with someone!
It is the best time to make a few plans for the longer term and it
is time to be happy. I have read this publish and if I may I desire to counsel you
some interesting things or advice. Maybe you could write next articles referring to this article.
I wish to learn even more issues approximately
it!
Do you have any video of that? I’d want to find out more
details.
Outstanding quest there. What occurred after?
Good luck!
Every weekend i used to pay a quick visit this web site, for the reason that i
want enjoyment, for the reason that this this web site conations genuinely good funny
material too.
This post is genuinely a pleasant one it helps new the web visitors, who are wishing in favor of blogging.
What i don’t realize is in truth how you’re not really much more neatly-appreciated than you might be right now.
You’re so intelligent. You know therefore considerably when it comes to this
subject, made me individually imagine it from a lot of various angles.
Its like women and men don’t seem to be involved until it’s one thing to do with Girl
gaga! Your own stuffs great. All the time handle it
up!
Hi, this weekend is good in favor of me, because this moment i am reading this impressive
informative paragraph here at my residence.
Hello there, just became alert to your blog through Google, and found that
it is really informative. I’m going to watch out for brussels.
I will be grateful if you continue this in future. Numerous people will be benefited from
your writing. Cheers!
Hi there, this weekend is good for me, because this point in time i am reading this impressive educational post here at my home.
Hello, i read your blog from time to time and i own a similar one and i was just wondering if you
get a lot of spam comments? If so how do you stop
it, any plugin or anything you can advise? I get so
much lately it’s driving me mad so any help is very
much appreciated.
After looking at a few of the blog posts on your blog, I
seriously like your technique of blogging. I book-marked it to my
bookmark website list and will be checking back in the near future.
Take a look at my website too and let me know what you think.
Nice blog here! Also your web site loads up fast!
What host are you using? Can I get your affiliate link
to your host? I wish my website loaded up as quickly as yours
lol
Spot on with this write-up, I truly feel this website needs far more attention. I’ll probably be returning to read more, thanks for the info!
Quality articles or reviews is the main to attract the viewers to pay a
quick visit the website, that’s what this site is providing.
Someone necessarily help to make severely posts I might state.
This is the first time I frequented your website page and thus far?
I amazed with the research you made to create this actual put up
incredible. Fantastic process!
You really make it appear really easy along with your presentation however I to find this matter to be really
something which I feel I might never understand.
It kind of feels too complicated and extremely vast for me.
I am looking ahead in your next submit, I will try to get the dangle of it!
I believe this is among the so much important information for me.
And i am happy reading your article. However should observation on some general issues, The website style is great,
the articles is actually great : D. Excellent task, cheers
Have you ever thought about adding a little bit more than just your articles?
I mean, what you say is valuable and everything. But just imagine if you added some great visuals or videos to give your posts more, «pop»!
Your content is excellent but with pics and clips, this website could undeniably be
one of the most beneficial in its niche. Amazing
blog!
Hi! I know this is somewhat off topic but I was wondering which blog platform are
you using for this website? I’m getting fed up of WordPress because I’ve had issues with hackers and I’m
looking at options for another platform. I would be fantastic if you could
point me in the direction of a good platform.
This paragraph will assist the internet visitors for setting up new weblog or even a blog from start to end.
Op deze manier verkoopt u bitcoins voor geld.
We are a gaggle of volunteers and starting a brand new
scheme in our community. Your website offered us with helpful information to
work on. You’ve done a formidable activity and
our entire group will be thankful to you.
This is very interesting, You’re a very skilled blogger.
I have joined your feed and look forward to seeking more of your wonderful post.
Also, I’ve shared your website in my social networks!
I’m really enjoying the theme/design of your web site. Do
you ever run into any internet browser compatibility problems?
A few of my blog readers have complained about my site not working correctly in Explorer but looks great in Safari.
Do you have any solutions to help fix this issue?
Great post.
Excellent blog right here! Additionally your website loads up very fast!
What web host are you the use of? Can I am getting your associate link in your host?
I wish my website loaded up as fast as yours lol
When some one searches for his required thing, so he/she
wishes to be available that in detail, thus that thing is maintained over here.
Hi there! I could have sworn I’ve visited your blog before but after browsing through many of the posts I realized it’s new to me.
Anyhow, I’m certainly happy I came across it and I’ll be book-marking it and checking back often!
Hey there terrific website! Does running a blog like this take a
large amount of work? I’ve very little knowledge
of programming however I had been hoping to start my own blog in the
near future. Anyways, if you have any recommendations or techniques for new blog owners please share.
I know this is off subject but I simply wanted to ask.
Thank you!
Wonderful article! This is the kind of information that are meant to be shared across the web.
Disgrace on the seek engines for now not positioning this put up higher!
Come on over and consult with my site . Thanks =)
What you wrote made a ton of sense. However, think about this, what if
you added a little information? I am not saying your content isn’t good., but suppose you added
something that makes people want more? I mean HITACHI EXPORT TOOL: El amigo invisible | Almacenamiento Abierto is kinda plain. You ought to
peek at Yahoo’s front page and see how they write post headlines to grab viewers to open the links.
You might add a video or a pic or two to grab readers interested about everything’ve got to
say. In my opinion, it could make your website a little bit more interesting.
If you are going for most excellent contents like I do, simply pay a quick visit this site every day
as it gives quality contents, thanks
I think the admin of this website is in fact working
hard in favor of his website, since here every
stuff is quality based material.
Thank you for the good writeup. It actually was once a enjoyment account it.
Glance complicated to more added agreeable from you!
However, how could we keep in touch?
I’m very pleased to uncover this great site. I need
to to thank you for ones time for this particularly wonderful read!!
I definitely liked every bit of it and i also have you saved as
a favorite to look at new information in your blog.
If some one wishes to be updated with newest technologies then he must be
go to see this site and be up to date every day.
Howdy superb website! Does running a blog like this take a
large amount of work? I’ve no understanding of programming but I had been hoping to start my own blog
soon. Anyway, if you have any ideas or techniques
for new blog owners please share. I understand this is off
subject nevertheless I simply needed to ask. Many thanks!
I read this post completely concerning the difference of most recent and
previous technologies, it’s awesome article.
Having read this I believed it was very enlightening.
I appreciate you finding the time and energy to put this article together.
I once again find myself personally spending way too much time both reading and leaving comments.
But so what, it was still worthwhile!
Hi, There’s no doubt that your web site might be having browser compatibility problems.
Whenever I look at your website in Safari, it looks fine however, when opening in IE, it has some overlapping issues.
I merely wanted to give you a quick heads up! Besides that, great site!
This paragraph will assist the internet users for building up new website or even a weblog from
start to end.
I do believe all of the concepts you have presented for your post.
They are very convincing and will definitely work.
Still, the posts are very brief for novices. May just you please extend them
a little from next time? Thank you for the post.
Great blog you’ve got here.. It’s difficult to find high quality writing like yours these days.
I really appreciate people like you! Take care!!
I used to be suggested this website via my cousin. I am not certain whether this publish is written through him as no one else recognize such particular
approximately my problem. You’re amazing! Thank you!
Dat is het kabinetsstandpunt over cryptomunten.