citrix4Dell 1855 blade, no RAID OR RAID 1?
| Tyd Ros | “that Citrix blames on 50-50% read/write cache policy”
What does Citrix want the read/write cache to be? What do they suggest? SHould there be no read write cache policy on cotrix servers? |
| Ryon Brubaker | Sorry, Citrix wants it to be 50-50. Most controllers default to 100% read and no write, our issue with Dell blades is that there is no cache memory at all!…therefore no cache settings to tweak 50/50.
Been pushing Dell to fix this for Citrix customers. At this time, if looking at blades for Citrix and your file server… I’d recommend Compaq or IBM blades since they support battery backed cache, least up to 128MB. |
| Brian Kyle | Dell Blade server are not for performance. They make good web and Exchange servers. I would suggest doing some research before purchasing servers. |
| Julie Quaro | Hi,
I was wondering why are you stuck with only dell Blades. I mean why can’t you look at a different blades vendors like IBM, HP, or SUN. All of them have a blade offering. I am pretty sure at least one or two of them will not have that cache battery problem. You might want to check how these compare to dell blades as well before considering them by checking: IBM Blade Server vs Dell Blade Server I hope these help you look out of the box. I mean if one vendor can’t match your need, you should look else where and see if some one else can match it. Enjoy, |
| Ryon Brubaker | ATTN: Raid gurus,
We have 6 Dell 1855 blade servers: …they use PERC 4 /im RAID controllers but do not have write-caching and we are experience pauses that Citrix blames on 50-50% read/write cache policy. So… we were thinking that since we have 6 Citrix servers that we can afford to MAYBE try to solve the pause issue by switching to no RAID (1 disk for OS, 1 disk for swap) Should we? other suggestions? Dell has been no help in the matter. Too late to get new servers with 256MB cache memory, etc… |
| Ryon Brubaker | ATTN: Raid gurus,
We have 6 Dell 1855 blade servers: …they use PERC 4 /im RAID controllers but do not have write-caching and we are experience pauses that Citrix blames on 50-50% read/write cache policy. So… we were thinking that since we have 6 Citrix servers that we can afford to MAYBE try to solve the pause issue by switching to no RAID (1 disk for OS, 1 disk for swap) Should we? other suggestions? Dell has been no help in the matter. Too late to get new servers with 256MB cache memory, etc… |
