I'm a blade n00b, so I was hoping you could expand a little of the limitations you have seen using ESX and not being able to split up NICs. The Dell Chassis has a few different I/O options. PowerConnect switches, ethernet passthrough fiber channel passthrough, etc, so my thought was you can still have individual NICs for each Blade? Dell also has an daughter card option for the Blades themselves for a Dual GigE NIC or a Dual GigE TOE NIC, so I see this as a way to get additional networking into your Blade, but there is only 1 daugther card option, so you get Dual GigE or Dual Fiber HBA, not both, which is probably something you'd want for an ESX box. -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Jeremy Saunders Sent: Thursday, September 21, 2006 8:41 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: OT: Blade Servers Yeh...you had to go there....didn't you Joe :) I assume you are talking about the lack of write back cache from the LSI 1030 controller. This can be an issue for some environments. However the new HS21's have write back cache. My understanding from asking lots of questions internally, is that the orginal design of the HS20's was more focused around booting from SAN. I've used plenty of HS20's as Citrix servers, and have personally found that the lack of write back cache has not caused performance issues. I know you and your customer had a bad IBM experience from some disgraceful customer service in the past, but we are not all bad. Out of 320,000 employee's, you found the one or two bad apples that did not step up and help you. I am very sorry about what happened. But you need to get over it and move on and stop bagging IBM on this forum with every opportunity you get. Anyway... In the real world, there is no single server that has every feature you could ask for without any quirks. You will always find some issue somewhere along the lines that may relate to a sepcific application server, or a limitation introduced within your own environment. At the end of the day they will all do the same thing, and everyone has their own opinions and experiences. So I think rather than try and play the 3 vendors against each other, it's more constructive to understand why you want to go down the blade path and not stick to traditional servers, especially when Evan was talking about using some of them as ESX hosts. Even though we've had this conversation a few times on this forum, I'm not convinced that blades suites all environments. Once you go down the blade path you lock yourself in. In other words, you need to fill the blade centre with blades in order to achieve your ROI. I guess many of you in the larger countries and environments don't have this problem (just like Rusty ordering 30 at a time), but I see this as being an issue in Australia, where the environments are not always as big. And then there are the limitations of blades, especially when adding NIC's, HBA's, etc. Blades are great for Citrix servers, Web servers, Domain Controllers, etc, but once you start using them for ESX hosts, you start hitting limitations. You can't divy up the NICs. Sure in ESX version 3 the Service Console can now share a NIC (and there was an unsupported hack for 2.5x), and you can also trunk (VLAN) them, but there is still the issue of available bandwidth to the blade. So when using blades as ESX hosts, your bottleneck will almost always be the NIC's. And then of course if your servers are old and don't have a PCI Express bus, the NIC's will share a PCI-X bus, and compete against each other for bandwidth. With a standard rack mount server, you can add NIC's, HBA's, etc. So the answer would be to use the bigger (double size) blades, which take up two slots. Well these are expensive, so what's the point of filling your blade centre up with these, as you will blow out your ROI. Some time ago I advised a couple of customers to go down the blade centre path because it seemed like the right way to go. Sure they filled it, and have achieved ROI, but now that we are introducing ESX into their environment, and after doing the sums, we are hitting some Archtectural/Design limitations when considering using some of the bades as ESX hosts. And now I'm annoyed with myself that I didn't understand how these limitations would effect their environment once we start looking into using ESX for DR and Business Continuity. Don't get me wrong, I love working with blades, and this issue will not concern everybody, but you need to make sure they will provide you with what you need. If you are puchasing Dell, then get the Dell Server SE in for a whiteboard session, and likewise for HP and IBM. Sorry for getting carried away and going off topic a bit, but I often don't think people look at the bigger picture when purchasing blade hardware. Cheers. Kind regards, Jeremy Saunders Senior Technical Specialist Infrastructure Technology Services (ITS) & Cerulean Global Technology Services (GTS) IBM Australia Level 2, 1060 Hay Street West Perth WA 6005 Visit us at http://www.ibm.com/services/au/its P: +61 8 9261 8412 F: +61 8 9261 8486 M: TBA E-mail: jeremy.saunders@xxxxxxxxxxx "Joe Shonk" <joe.shonk@gmail. com> To Sent by: thin@xxxxxxxxxxxxx thin-bounce@freel cc ists.org Subject [THIN] Re: OT: Blade Servers 21/09/2006 08:23 AM Please respond to thin@xxxxxxxxxxxx g Actually, all three vendors have tight integration with Altiris (for HP it's call RDP, but it's just Altiris with the HP logo). I'm not quite sure why you think IBM is better than Dell? The Dell at least come with a real RAID controller... HP's SAS controller is crap and IBM, well let's just say the HS20s (8843) was nothing short of a cluster ...... On the bright side, HP blades do support Opterons processor unlike Dell... If your planning to running anything like VMware ESX on blades, the Opterons are the way to go. Joe On 9/20/06, Rusty Yates <rusty27@xxxxxxxxx> wrote: We are using Dell OpenManager right now and the on board management for the blade chassis (which is ok) nothing like IBM. But when we were looking at IBM, HP and Dell we knew IBM and HP were better but for what we needed Dell was better and we got more servers for the money. This year we are looking at Altiris which has a piece that is designed just for Dell. Looks sweet and pricing isn't that bad. On 9/19/06, Evan Mann < emann@xxxxxxxxxxxxxxxxxxxxx> wrote: Are you using OpenManage or 3rd party for management? I've never been impressed with OpenManage for non-Blade servers, but I'd imagine the Blade variant is much different. From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Rusty Yates Sent: Tuesday, September 19, 2006 12:56 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: OT: Blade Servers In our environment we are running the Dell 1855 Blades and haven't run into any problems. Next year we will buy the 1955 models. On 9/19/06, Evan Mann <emann@xxxxxxxxxxxxxxxxxxxxx> wrote: It looks like I'm going to be moving into the land of Blade servers. We're a Dell shop, so Dell 1955's are what is being looked at right now. I want to put together a host list of key items to make sure these things have/support. Memory backed RAID cache and power issues are the only thing I have on the list now, since that was the main issues I've seen come across the list. Obviously, management of the blade chassis is important. If it's useful, here is what we are planning to do with the Blades: There is no intention of moving our Citrix farm to blades, but we are deploying a new business level app using VMWare ESX3. This new app will utilize web servers and SQL servers. The web farms will be in ESX and will utilize an application load balancer, the SQL servers (starting with 1) will likely not be in ESX, but that is undecided. We will have a fiber connected SAN as well, but the plan isn't to boot off the SAN (right now at least). It is unknown if we will connect the entire blade chassis to the SAN, or servers individually. It depends on the cost of the fiber switches. We are doing a lot of server consolidation as well to 2 existing 2850 (dual 3.4ghz Xeon's) running ESX3. As we need more capacity, we will use additional Blades for ESX 3 and consolidation. The 10 blade chassis specs out to about 6k. Each 3ghz Dual Core (woodcrest) blade with 16 gigs of RAM, 2x75gig SAS drives and dual Broadcom TOE GigE/dual QLogic Fiber HBA's will run us about $6600 (including warranty/support) ************************************************ For Archives, RSS, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: //www.freelists.org/list/thin ************************************************ ************************************************ For Archives, RSS, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: //www.freelists.org/list/thin ************************************************