New answers tagged sas
Look at your SAS tape drive(s). Do you see one SAS port or two SAS ports? If you see one, you don't have any options to daisy-chain.
Certainly SAS does support daisy-chaining but obviously individual products don't have to support that if they don't want. So it all comes down to the exact products you have, if you have a device that has both in and out ports then I say go for it - it won't be too hard to try and if it doesn't work you'll know about it pretty quickly. On a separate note I ...
if I'm not mistaken, you have to configure it from the BladeServer itself, not from its module.
Any disk load and you will suffer with SATA drives unless possibly if you have a large array that shares the load between disks like a RAID 10 or something like that. I have servers with SATA drives running application servers (Tomcat) which have no disk activity other than Tomcat's log and regular OS stuff. I have remote desktop servers with 2 SATA drives ...
I'd use SAS in just about every case, unless this is a home system that won't be running production workloads. It's less about speed and more about error correction, the protocol and reliability of the entire system.
This looks like the part you're looking for: XP00F - ASSY,CBL,MB,HD,SAS A,R420/R320 - Mini SAS & ODD power cable, MB (SAS A) to HDD (used with cable HDD). This is the SAS version of the cable, where p/n H3YKR looks to be the SATA version - though I'd expect the SAS cable would probably work fine for either anyway since the SAS connectors are ...
Part VM02C is listed in Dell's internal DBs as "PERC H710 Adapter - FH Gen 3" I'm not sure what those 3 part numbers are (they turn up as invalid with my searches), but the model you're looking at online should be fully compatible with your system. Here are all the part numbers listed as available for "dispatch" for the T420: VM02C PERC H710 Adapter - ...
It never occurred to me that these performance numbers are to be expected. I thought there was some hidden problem that was eluding me. Shame on Dell for selling this junk. This server cost rather a lot, and my laptop can beat it on certain tasks. It would seem this issue is resolved. This is the expected behavior. There is no problem.
The H310 does not have any write cache (compared to the H710, which has 512MB of battery-backed cache), so right off the bat you're not going to get "great" write performance with it. The H310 also doesn't utilize the cache built into the hard drives by default, so everything is strictly "write-through". You could always enable disk caching in Windows, ...
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