On 5/26/09 6:17 PM, "Greg Smith" <gsmith@xxxxxxxxxxxxx> wrote: > On Tue, 26 May 2009, Joshua D. Drake wrote: > >> CMD doesn't rent hardware you would have to provide that, Rack Space >> does. > > Part of the idea was to avoid buying a stack of servers, if this were just > a "where do I put the boxes at?" problem I'd have just asked you about it > already. I forgot to check Rack Space earlier, looks like they have Dell > servers with up to 8 drives and a RAID controller in them available. > Let's just hope it's not one of the completely useless PERC models there; > can anyone confirm Dell's PowerEdge R900 has one of the decent performing > PERC6 controllers I've heard rumors of in it? Every managed hosting provider I've seen uses RAID controllers and support through the hardware provider. If its Dell its 99% likely a PERC (OEM'd LSI). HP, theirs (not sure who the OEM is), Sun theirs (OEM'd Adaptec). PERC6 in my testing was certainly better than PERC5, but its still sub-par in sequential transfer rate or scaling up past 6 or so drives in a volume. I did go through the process of using a managed hosting provider and getting custom RAID card and storage arrays -- but that takes a lot of hand-holding and time, and will most certainly cause setup delays and service issues when things go wrong and you've got the black-sheep server. Unless its absolutely business critical to get that last 10%-20% performance, I would go with whatever they have with no customization. Most likely if you ask for a database setup, they'll give you 6 or 8 drives in raid-5. Most of what these guys do is set up LAMP cookie-cutters... > > Craig, I share your concerns about outsourced hosting, but as the only > custom application involved is one I build my own RPMs for I'm not really > concerned about the system getting screwed up software-wise. The idea > here is that I might rent an eval system to confirm performance is > reasonable, and if it is then I'd be clear to get a bigger stack of them. > Luckily there's a guy here who knows a bit about benchmarking for this > sort of thing... > > -- > * Greg Smith gsmith@xxxxxxxxxxxxx http://www.gregsmith.com Baltimore, MD > > -- > Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-performance > -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
