| Title: | NetWorker |
| Notice: | kits - 12-14, problem reporting - 41.*, basics 1-100 |
| Moderator: | DECWET::RANDALL .com::lenox |
| Created: | Thu Oct 10 1996 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 750 |
| Total number of notes: | 3361 |
Hello, one of my customer has 3 Ethernet trunks with about 100 PCs and Workstations connected to each of them. They are going to put an Intel server on each trunk for doing backups using Networker. I'm trying to sell them a unique Windows-NT Alpha Server with 3 Ethernet board for doing the same job. They have some concern about my proposal regarding the scalability of the Networker software against the network card. They tested this kind of solution on a Sun server and they saw that using 3 Ethernet board they couldn't get 3 times the throughput they got with one. Can I assure them that my configuration based on 1 AlphaServer with 3 Ethernet board can do the same job as 3 Intel Server with 1 board each ? Thanks in advance, best regards. Luigi Fracchia
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 677.1 | insufficient information | montlake.zso.dec.com::lenox | Digital's suing Intel, best brand marketing there is | Tue May 13 1997 12:31 | 14 |
Well, this really depends.... e.g. if one compares a 4cpu 8400 with 2GB of memory with three single cpu pentiums with 64MB of memory then I will assure you that the 8400 is better. But since there are no details about the systems involved, I would not hazard to guess. Amy reply to decwet::lenox [email protected] | |||||
| 677.2 | AlphaServer 4000 5/400 is enough ? | NUBABA::FRACCHIA | System Wide Notes Browser | Tue May 13 1997 23:29 | 18 |
According to the sizing guidelines I got from the internal Web, stating you need 1/3 of a EV5 CPU running at 300 MHz, I was thinking to propose an AlphaServer 4000 5/400 with 1 CPU and 512 MB of memory running Windows-NT, with 2 disks for the index files. We expect to run 3 backup streams (1 or each Ethernet board) writing to a TL894 at the maximum speed allowed by Ethernet (800 KB/sec ?). Is it possible ? I hope the information I supplied would be enough. Thanks in advance, regards. Luigi | |||||
| 677.3 | DECWET::ONO | Software doesn't break-it comes broken | Wed May 14 1997 09:48 | 25 | |
>According to the sizing guidelines I got from the internal Web, stating you >need 1/3 of a EV5 CPU running at 300 MHz, I was thinking to propose an >AlphaServer 4000 5/400 with 1 CPU and 512 MB of memory running Windows-NT, with >2 disks for the index files. > >We expect to run 3 backup streams (1 or each Ethernet board) writing to a TL894 >at the maximum speed allowed by Ethernet (800 KB/sec ?). Note that this totals about 2.5 MB/sec, which is unlikely to keep even one TZ89 streaming. I assume that you're proposing a TL894 for capacity rather than for tape throughput, correct? In this situation, I would direct the backup streams to one or two drives (set NetWorker's active device count to 1 or 2). If you try to drive all four, then you will end up wasting CPU on interprocess communication (1 or 2 tape processes vs. 4), but you won't get any additional throughput because the network is a bottleneck. >Is it possible ? I think so, but we haven't done much testing with multiple Ethernets. Wes | |||||