similar to: System Reliability Metrics

sink() isn't behaving as i expect, when used inside a function, eg: x<-data.frame(F=c("O","O")) f<-"foo.txt" sink(f); format(x); sink(); # foo.txt looks great! foo<-function(x,f) { sink(f); format(x); sink(); } foo(x,f=f) # foo.txt is empty! why is this, and how can i successfully sink() within a function? my real function does some

sink() isn't behaving as i expect, when used inside a function, eg: x<-data.frame(F=c("O","O")) f<-"foo.txt" sink(f); format(x); sink(); # foo.txt looks great! foo<-function(x,f) { sink(f); format(x); sink(); } foo(x,f=f) # foo.txt is empty! why is this, and how can i successfully sink() within a function? my real function does some

I have an R library which uses identify() and system(com="xterm -e less /a/corresponding/file") to view files when I click on an x11() plot. I can successfully resize the xterm on Linux (i486) and Macos 10.4 (G4 and G5), but NOT Macos 10.4 (Intel). For example, on a new mac pro: # in a terminal,xterm,iterm,etc: xterm -e "printenv | less" # the resulting xterm resizes

i have a function like this: # show a plot and run a script when the user clicks on a plot, # where the script arguments correspond to the user-selected point. blah <- function(x, y) { plot(y~x) n <- identify(x=x, y=y) com <- system(command=paste("bleh", names(y)[n])) } i would like to do this via a web page instead of x11() etc. eg: 1) a user clicks on

I'm working on a project involving reliability values (known failure rates) for a system with approximately 700 components with a set cconfiguration. I'm looking to compute a "parts-count" MTBF (mean time between failures) for the system. (See also MIL-HDBK-217) Is there anything in R that can help me with this? Thanks, Eric Jennings QA Technical Assistant Crane

We are implementing a ZFS storage server (NAS) to replace a NetApp box. I have a Sun server with two dual Ultra320 PCIX cards connected to 4 shelves of 12 500GB disks each, yielding a total of 24TB of raw storage. I''m kicking around the different ways to carve this space up, balancing storage space with data integrity. The layout that I have come to think is the best for me is to

Hi All, On several of my servers I seem to have a high rate of server crashes do to file system errors. So I have some questions related to this: Is there any Mean Time Between Failure ( MTBF) data for the ext3 file-system? Does increased partition size cause a higher risk of the partition being corrupted? If so, is there any data on the ratio between partition size and the likely hood of

I understand that ZFS provides fault data, via the zpool status command, that would (probably ??) allow a knowledgeable[0] zfs admin to determine (manually) when a zfs hardware element (today that''s usually called a "disk drive") might need "maintainence" or might need to be replaced. And there are sufficient features/facilities available in the current (b36+) release

On Fri, 28 Oct 2016 18:50, Alessandro Baggi wrote: > Il 28/10/2016 16:28, Valeri Galtsev ha scritto: >> On Fri, October 28, 2016 2:42 am, Alessandro Baggi wrote: >> > Il 27/10/2016 19:38, Yamaban ha scritto: >> > > For my personal use I would replace that Drive asap. >> > > - There is no warranty for it anymore (time since buy) >> > > -

Can anyone recommend an enterprise-class monitoring system for both Linux and Windows servers? Here are my requirements: SNMP trap collection, ability to import custom MIBs isup/isdown monitoring of ports and daemons Server health monitors (CPU, Disk, Memory, etc) SLA reporting with nice graphs Pager/Email/SMS alerts with groups, filters and escalations Built-in MTBF and MTTR reporting Robust

Hello, We use all SCSI PCI card hardware RAIDs on all 4 of our production Asterisk servers. They all have Digium quad T1 cards and they all have from 2 to 4 T1s hooked up to them. We have had no noticable problems with dropped calls/poor quality. What are you looking to do with this system? what kind of traffic will be going through these 4 T1s? MATT--- -----Original Message----- From: Deon

Size/Speed/write cycles have gone way up, price has gone way down. More common than CompactFlash and no need for an adapter. So is it feasible to run an Asterisk server on something like this? With a MTBF of 1million write cycles coupled with dynamic wear management on a 4Gig USB drive, lifetime is a non-issue. Just wondering how well it works, if it works.

FYI, Seagate has announced a new enterprise SSD. The specs appear to be competitive: + 2.5" form factor + 5 year warranty + power loss protection + 0.44% annual failure rate (AFR) (2M hours MTBF, IMHO too low :-) + UER 1e-16 (new), 1e-15 (5 years) + 30,000/25,000 4 KB read IOPS (peak/aligned zero offset) + 30,000/10,500 4 KB write IOPS (peak/aligned zero offset)

From: Bruno Delbono <bruno.s.delbono at mail.ac> > I'm really sorry to start this thread again but I found something very > interesting I thought everyone should ^at least^ have a look at: > http://uadmin.blogspot.com/2005/06/4-dual-xeon-vs-e4500.html > This article takes into account a comparision of 4 dual xeon vs. e4500. > The author (not me!) talks about "A

I would prefer the behavior was different to what it is of I/O stopping. The argument I heard for the long 42 second time out was that MTBF on a server was high, and that the client reconnection operation was *costly*. Those were arguments to *not* change the ping timeout value down from 42 seconds. I think it was mentioned that low ping timeout settings could lead to high cpu loads with many

I am doing some testing in Samba 3.0. I am using security=ADS. I am wondering if Samba has any support for cross-realm trust. For example, I have one AD forest SANDIA.GOV that has trust with SANDIA2.GOV. I have the Samba server on linux.sandia2.gov. I have a local user account on linux.sandia2.gov called user. When I log into a win2k client as SANDIA2.GOV/user and connect, it works fine.

Hi Yamaban, Great expalanation. I think you know how to buy an ssd. There is no doubt about samsung ssds quality vs other. My question about neutron was to get your opinion about this product. My doubt was about differences between slc, mlc and tlc. Mlc endurance respect tlc is better and I though that the mlc of neutron gives me more endurance respect to the tlc. From a technic point of view,

I''m building another 24-bay rackmount storage server, and I''m considering what drives to put in the bays. My chassis is a Supermicro SC846A, so the backplane supports SAS or SATA; my controllers are LSI3081E, again supporting SAS or SATA. Looking at drives, Seagate offers an enterprise (Constellation) 2TB 7200RPM drive in both SAS and SATA configurations; the SAS model offers

So after troubleshooting this for about a week, I was finally able to create a raid 10 device by installing the system, copying the md modules onto a floppy, and loading the raid10 module during the install. Now the problem is that I can't get it to show up in anaconda. It detects the other arrays (raid0 and raid1) fine, but the raid10 array won't show up. Looking through the logs

Prof. Harrell, My name is Armida Carbajal, I'm a graduate student intern at Sandia National Laboratories (SNL) and am conducting some research for my thesis project at the University of New Mexico in Statistics for SNL. My project entails a logistic regression and I wanted to create a classification table like the one found in SAS using the function CTABLE. I was running out of ideas on