Jose, I agree with you on the theory, but have just tested this again with one of my VM's. Allocating extra RAM to MSSQL does not have the desired effect. ARS Startup times are still longer with the DB sitting on a HDD as opposed to a RAMDrive. Normal Remedy DevStudio stuff like opening HPD:Help Desk, adding a field and saving the form does take much longer - in spite of extra RAM allocated to SQL. Maybe there's more one can do to speed up MSSQL(?), but my tests so far have shown that having the ARSystem DB on a RAMDrive does provide the best possible performance on a laptop.
I would not recommend the RAMDrive config for a production environment, but for a consultant/developer looking to finish his/her work soonest, the DB-On-RAMDrive is both the cheapest and fastest solution I have found so far. Best Regards, Theo Sent from my Black/Silver Personal Computer .... “Try not to become a person of success, but a person of value.” – Albert Einstein From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG] On Behalf Of Jose Huerta Sent: 19 March 2012 11:40 To: arslist@ARSLIST.ORG Subject: Re: Solid State Hard Drives ** As far as I know, To have a RAM drive to feed the database engine theoretically has the same performance as giving this RAM to the database and tune to use this amount of cache. But also avoiding the counterpart of database corrupted on an unexpected power off. Jose M. Huerta Project Manager Movil: 661 665 088 Telf.: 971 75 03 24 Fax: 971 75 07 94 [cid:image001.jpg@01CD05DD.55310680]<http://www.sm2baleares.es/> SM2 Baleares S.A. C/Rita Levi Edificio SM2 Parc Bit 07121 Palma de Mallorca [cid:image002.jpg@01CD05DD.55310680] <http://es-es.facebook.com/pages/SM2-Baleares/158608627954> [cid:image003.jpg@01CD05DD.55310680] <http://twitter.com/#!/SM2Baleares> [cid:image004.jpg@01CD05DD.55310680] <http://www.linkedin.com/company/sm2-baleares> La información contenida en este mensaje de correo electrónico es confidencial. La misma, es enviada con la intención de que únicamente sea leída por la persona(s) a la(s) que va dirigida. El acceso a este mensaje por otras personas no está autorizado, por lo que en tal caso, le rogamos que nos lo comunique por la misma vía, se abstenga de realizar copias del mensaje o remitirlo o entregarlo a otra persona y proceda a borrarlo de inmediato. P Por favor, no imprima este mensaje ni sus documentos adjuntos si no es necesario. On Mon, Mar 19, 2012 at 09:58, Theo Fondse <t...@remex.co.za<mailto:t...@remex.co.za>> wrote: ** Peter, I use a much cheaper (and faster) alternative: RAM Drive. We have bumped up the RAM on my laptop to 16Gb and I downloaded a free RAMDrive utility that uses RAM to simulate a HDD. I then placed the ARSystem DB files of my ITSM764 VM on the RAMDrive. In spite of the fact that my laptop has 2 RAID-0 striped disks, Remedy now starts up 30% faster and rebuilding all the indexes on this ARSystem DB is approximately 6x faster (just over 1 minute). Allocating 8.5 GB RAM to the VM then makes for a ITSM 7.6.4 VM on your laptop that actually has acceptable performance. Be warned, however, there is a trade-off for the extra performance: The RAM Drive can get corrupted if your laptop is powered down unexpectedly. You need to ensure that you always shut down the VM and then the host to make sure your data is saved correctly to the image of the RAMDrive on your HDD. I also recommend using a partition with 64K file allocation blocks to store the RAMDrive image on your HDD to make sure laptop start-up/shut-down times are minimised. Best Regards, Theo Sent from my Black/Silver Personal Computer .... “Try not to become a person of success, but a person of value.” – Albert Einstein From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG<mailto:arslist@ARSLIST.ORG>] On Behalf Of Rick Cook Sent: 16 March 2012 23:26 To: arslist@ARSLIST.ORG<mailto:arslist@ARSLIST.ORG> Subject: Re: Solid State Hard Drives ** Modern versions are better, but you can still get corrupted sectors on SSDs. I wouldn't use one as my only disk, but as part of a SAN, if you can afford it, no problem. Rick On Mar 16, 2012 5:17 PM, "Peter Romain" <p.romain.arsl...@parsolutions.co.uk<mailto:p.romain.arsl...@parsolutions.co.uk>> wrote: I'd try the SSD if I was you. Cloning and replacing the hard drive in the laptop is a breeze. Paying for the SSD is painful though - ~ £460 for a 500G version here in the UK -----Original Message----- From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG<mailto:arslist@ARSLIST.ORG>] On Behalf Of Murnane, Phil Sent: 16 March 2012 13:30 To: arslist@ARSLIST.ORG<mailto:arslist@ARSLIST.ORG> Subject: Re: Solid State Hard Drives Peter: I have a habit of keeping a resource monitor (Windows 7 Resource Monitor or CentOS GNOME widget) running on my laptop at all times and of never using the host OS to do anything except run VMs. Given sufficient RAM (8GB seems adequate), I've found that the hard disk is almost always the bottleneck in performance, especially when running more than one VM. I've been considering buying an external esata enclosure with two 7200 RPM drives configured as RAID 0 for my work laptop. I use a similar storage configuration on my home server, and the disk bottleneck is much reduced. All that being said, SSDs have seemed pretty stable for the last couple of years. If performance similar to the RAID 0 configuration can be achieved internally, then it would be _way_ more convenient than an external enclosure. HTH, --Phil -----Original Message----- From: Action Request System discussion list(ARSList) [mailto:arslist@ARSLIST.ORG<mailto:arslist@ARSLIST.ORG>] On Behalf Of Peter Romain Sent: Friday, March 16, 2012 07:49 To: arslist@ARSLIST.ORG<mailto:arslist@ARSLIST.ORG> Subject: Solid State Hard Drives Hi All, I couldn't get ITSM to run on my laptop which has an i7 processor and 8G RAM. I recently upgraded it to 16G and replaced the hard drive with a 500GB SSD. Now ITSM flies and I can run it and ADDM together in VM's and still do the normal document/email stuff. Are SSD's now sufficiently stable to use in datacenter servers? If so, would this help solve some performance issues? I'm not responsible for any servers so am just asking out of interest. Cheers Peter _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org<http://www.arslist.org> attend wwrug12 www.wwrug12.com<http://www.wwrug12.com> ARSList: "Where the Answers Are" _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org<http://www.arslist.org> attend wwrug12 www.wwrug12.com<http://www.wwrug12.com> ARSList: "Where the Answers Are" _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org<http://www.arslist.org> attend wwrug12 www.wwrug12.com<http://www.wwrug12.com> ARSList: "Where the Answers Are" _attend WWRUG12 www.wwrug.com<http://www.wwrug.com> ARSlist: "Where the Answers Are"_ _attend WWRUG12 www.wwrug.com<http://www.wwrug.com> ARSlist: "Where the Answers Are"_ _attend WWRUG12 www.wwrug.com<http://www.wwrug.com> ARSlist: "Where the Answers Are"_ _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org attend wwrug12 www.wwrug12.com ARSList: "Where the Answers Are"
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