Posts made by Pete.S

It's not trying to print a logo which should reside in the flash memory in the printer? The logo is downloaded with some epson utility.
Another issue could be that the user entered some unsupported characters in text that goes on the reciept, like the company name, address or somewhere. The printer doesn't recognize it and prints garbage.

Best way to trouble shoot issues like this is to capture the serial data that goes to the printer with a laptop or something. That way you can see what is actually sent and figure out where the problem is.

You need some connectors and a serial to USB adapter to make it happen. You can capture the data with linux or use some windows utility to do it. Search for serial port sniffer to find some.

@Osvaldo said in Two or three screens. what is your choice? or just one.:

@Pete-S Hey Pete, 40" to 55" sound's crazy.

It's because most people are used to working on very small screens, like one tiny 24".

But it's not really as big as you might imagine:

It's 43" Dell in the pic.

Monitors in this size goes for around $550 to $850 so they're not that expensive.

If you need more storage density you could also go with another chassis using the NF1 format SSDs from Samsung.
That's a whopping 0.54 PB in 1U.

@dafyre I checked our supplier and fully stocked with 36 15TB Samsung PM983 NVMe drives it would be priced at around $115K with 768GB RAM and two Xeon CPUs and a couple of 25Gb NICs.

@Osvaldo said in Two or three screens. what is your choice? or just one.:

Just to know, I am with two 24" fullHD because it has around the height of an A4 paper page. and not 4k because at the distance can't see much of a difference while working. (gaming different deal) what are your choices?

I've used different multimonitor setups for years. It used to be that one monitor didn't have enough screen estate so you'd have 2 to 6 monitors to compensate. But 3-4 years ago larger monitors started to show up and that is what I use now. So one 40-50" inch 16:9 monitor, preferably curved.

I'm still longing for something wider with more pixels so I hope someone will make a curved 21:9 at around 55".

I'd just put twenty 15TB NVMe drives in my little 1U server and call it a day.

@scottalanmiller said in Raid10, must use or another Raid limits?:

@Pete-S said in Raid10, must use or another Raid limits?:

Time to rebuild a 8TB drive at 100 MB/s is 8000000/100=80000s=22 hours. That's nothing.

That's not reality. RAID 6 rebuild on 8TB is weeks, often months. 100MB/s is not the rebuild speed. You'd have to anticipate at least 2-3 weeks for a rebuild to happen.

BS.

OK, let me clarify that. If you take the array out of production it's a realistic number. BTDT. Which you can if you have split arrays and don't stripe it all. Also a little logic is needed on where the backups go.

@DustinB3403 said in Raid10, must use or another Raid limits?:

@Pete-S it's not just a numbers game, that's a failure of your backup. And if you require data from that backup, then your done for.

It may work, it may not. But it's not a reasonable thing to say "eh it's our only backup it may work when we need".

RAID10 makes no difference if that is what you mean. You can have a disc failure on rebuild and then you have nothing.

That's why I say it's a numbers game. With 4% probability of having to rebuild a drive and a 9% probability of a bit error in the rebuilding process the probability is 0.4% that you will not have a backup that is OK. Now multiply that with the probability that you will need that particular backup set during the one or two days it takes for you to identify the problem and schedule a full backup of that particular VM (which renders backup with screwy bits obsolete).

And to take it a bit further. What will happen if the backup is truly lost? There is a dollar amount attached to that problem.

@DustinB3403 said in Raid10, must use or another Raid limits?:

@Pete-S the issues here is you're splitting the array. The disks all could still fail, and a resilver would need to be done anyways.

In what world if a few bits being screwy acceptable?

That means that data is useless.

I'm not sure what you mean. But a backup is a backup, so the original is still in place. If you have 100 incremental backups and you know that number 65 has bit errors you have to schedule a full backup on the VM that the backup belongs to.

It's a numbers game.

I would not do as what has been discussed.

I'd do 3 arrays of 8 x 8TB 3.5" SATA enterprise drives on software RAID 6. That's about 150TB. If it's not enough just go with 4 arrays instead.

Time to rebuild a 8TB drive at 100 MB/s is 8000000/100=80000s=22 hours. That's nothing.
Probability for drive failure is 4% per year for each array.

If you have unrecoverable read error (probability < 9% for the above config) during rebuild it's not the end of the world. That's old hardware raid thinking. You just have to clone the offending drive, replace it and rebuild again. You will end up with a byte somewhere on the array that are incorrect but the rest of the data will be fine. Backups should have file hash (checksum) to verify it's integrity so no big deal in this particular case.

8TB Exos Enterprise SATA drives are around $250. So 24*250=$6000 for the drives.
Software raid won't need a raid controller and has very low CPU and RAM requirements on HDD arrays - if you use a reasonable file system. If you're using Supermicro you should pick a chassis with a SAS port expander, not the one mentioned earlier in the thread.

I would use the arrays as individuals so you can take one of them out of commission if you like and run backups on the others instead. Maybe even put it on two servers instead of one.

@wrx7m said in Dell server and storage...:

I had looked into getting some Intel ssds to put in the cachecade bays on my R720XDs a few years ago. Everyone said that they got the predictive failures or other warning on them because they didn't have the Dell firmware. I didn't end up doing it because I don't need a constant false positive that distracts or hides actual potential issues.

Yes, it makes sense to buy Dell drives if you buy Dell servers. It also makes sense to replace those servers when they are out of warranty. The purpose of buying Dell is that you want some handholding and for that you have to pay a little more.

@Jimmy9008 said in Dell server and storage...:

Say we had a T640 server, or MD1200 DAS, or MD3820F SAN, could the drives be populated with say Samsung 860 SATA?

The Samsung 860 SATA are consumer drives so you should be looking at PM863 / SM863 instead (or the newer 883 series). That way you get a drive that is the same quality as you would get from Dell.

I imagine that the SAN uses SAS disks though. In that case it's another series.

@wrx7m said in Dell server and storage...:

@Pete-S said in Dell server and storage...:

@RojoLoco said in Dell server and storage...:

@WrCombs that being said, we do order Actual Dell enterprise SSDs when we put flash in production machines.

You mean except that Dell manufacturers zero SSDs so it's actually a Samsung, Intel or something else?

Right. The drives Dell uses have Dell specific firmware.

I don't think it specific to Dell at all, but it is a firmware version that has been tested and evaluated by Dell so they know it works in their products and have the performance they are after.

@RojoLoco said in Dell server and storage...:

@WrCombs that being said, we do order Actual Dell enterprise SSDs when we put flash in production machines.

You mean except that Dell manufacturers zero SSDs so it's actually a Samsung, Intel or something else?

@scottalanmiller said in Why Do Email Readers Always Default to Oldest Email First:

Seriously, does anyone actually read their email that way?

Yes, I want them in chronological order. Just like this thread is.

IMHO, the world is too chaotic so todo lists needs to be very fluid.

This is what I do:

• Todo's are put in the calendar if they have to be done at a certain time and day, otherwise they go on the todo list.
• Todo's never goes in the notes. N e v e r .
• Everything that need to be done before a certain day/week or month are put in the todo list but reminders in the calendar.
• Don't put projects in the todo list. Todo list should have been broken down into actionable tasks.
• Projects go on a project list.
• Review your todo list and project list on a regular basis to catch anything that is stuck

The problem is not always the tools but how you use them.

Calendar needs to be one and one only and it should be personal. It contains the planning of fixed time items that has to be done at a certain time and day. Say you have a meeting on Wednesday at 2 o'clock but it takes 30 minutes to get there and it takes 10 minutes for you to pack your things then you need to allocate all the time it takes for that meeting in your calendar. So a one hour meeting maybe takes 10 minutes packing, 30 minute travel, 60 minutes meeting, 10 minutes to wrap up the meeting, 30 minutes to get back and 10 minutes to unpack, file notes and whatever.

But maybe you need to do some research, planning or other kind of work before the meeting. That you put in your todo list which contains specific things to do that are not bound to a specific time or date, like set up a telephone meeting with XYZ to discuss the new project, email ABC to get prices etc. The todo list should be organized after the type of activity/location you can do it in and not project or client.

And to make sure you have all these items done in time before the meeting, you have to put reminders in the calendar so that you can verify that it is done and if it's not, you have a second chance to do so or you may have to postpone the meeting.

You should not use the due date on the todo list. When it's due it's often too late to do it. You can use it for information but anything that need to happen on a certain date should be in the calendar. And if you need reminders to make sure you get it done in time you put those in the calendar - "check on project Z that we are on track and plan to be ready in 4 weeks". So when you look at one week in the calendar, you'll see everything that has to happen that week.

If a team work on things together you should have a worklist for that. Maybe a kanban board if it's a project or perhaps a ticketing system if that fits better. Unless everyone just works of the worklist they also need their own calendar, todo list etc. Depends on how much control they have over their work. A factory worker that works by the production line may not have to plan his work day at all.

Management of teams and management of projects are separate things compared to management of your own time.

@scottalanmiller said in Yealink T46S Missing Opus Codec in 66.84.0.15 Firmware:

Anyone noticed that several firmware updates for Yealink T4xS phones seems to be missing the Opus codec, which is the primary reason for getting that phone in the first place? Very strange. We've seen it missing in multiple firmware releases, on multiple phones in the series.

FYI, we're on 66.83.0.55 which I think is the latest approved firmware for 3CX. It has the opus codec.

How did you determine you don't have the opus codec?

@scottalanmiller said in Remote syslog server questions:

@Pete-S said in Remote syslog server questions:

If I send all logs to a remote syslog server, what happens if the syslog server is down?

Depends on the sending mechanism or client.

It seems like the servers I want to send logs from all rsyslog.

The A chips are probably AMD's A-series desktop chips.
https://www.amd.com/en/processors/athlon-and-a-series

Alright, it looks like the boot drive or controller is dead.

Thanks!

@travisdh1 said in Dell MD1220 Rebuild Question:

@Jimmy9008 said in Dell MD1220 Rebuild Question:

@travisdh1 said in Dell MD1220 Rebuild Question:

@Jimmy9008 said in Dell MD1220 Rebuild Question:

@travisdh1 said in Dell MD1220 Rebuild Question:

It's RAID 5 with spinning rust, failure to rebuild is very likely. Automatic rebuild just ups the anti by taking away any chance you have to run a backup before attempting a rebuild. Hope the QA Team doesn't care about the data on it, and the backups are good if the data is at all important.

I didnt really type my question out properly. Apologies. What i'm asking is if anybody has heard of full arrays never rebuilding 'due to parity' as Dell just told me... not specifically about backups/Raid5.

I would expect that if the rebuild is successful, I would see a full drive come online. But available with 0 space. What Dell are saying is that as its full, it just wont work...

What they said is true, but they used the wrong terms and/or didn't follow completely through with the thought. It's all about weather a drive experiences a URE, in which case parity can not be calculated for that block. Most array controllers (apparently including the one in your MD1220) will just stop and not continue. Thus the failure 'due to parity'.

I'm guessing the person was just reading from a script and doesn't actually know much.

Shiboleet anyone? https://xkcd.com/806/

So, if we do not hit URE the rebuild will go fine, and just show our full drive?

So long as no other failures happen, yes. That's still a big gamble because of how much stress the drives are under while rebuilding. Can you see what percentage it's at and how long it's been running the rebuild?

But why isn't the array available during rebuilding? Usually it should be.

@manxam said in What is this?:

That is the UEFI shell which typically means that the device is configured to boot in UEFI mode and cannot find/load the boot file/partition.

So it's the BIOS that gives me this. Does it mean it doesn't find the disk or just doesn't find the partition or it could be both?

I have a server that starts up like this. Exactly what is it?
Is it a BIOS shell or from some boot ROM on a pci card or is it some recovery shell from an OS partition?
Microsoft, linux or what?
Does it have something to do with UEFI?

@Jimmy9008 said in VLAN on Dell N4064 Stacked:

Im guessing 'U' is fine. As I want vLAN2 to pass traffic where the device has already set vlan2 in its NIC. If the LAG is set to 'T', all traffic will be set to vlan2, right? Even when from vLan1/default...

I think it's better to tag every vlan in both ends. Then you can be certain traffic ends up on the same vlan on the other switch stack.

I have never used a remote syslog server (thinking of graylog) so I have a few questions.

If I send all logs to a remote syslog server, what happens if the syslog server is down?
Also, will the performance of the syslog server have any effect on the server sending logs?
Are there any special security concern regarding having all logs in one place?

@RojoLoco said in Adobe After Effects - Preview is not real time:

@scottalanmiller mid to late 90s. absolutely. I graduated with my audio degree end of '96, literally EVERY VENDOR had Apple's ball juice conspicuously on their chin. According to "the industry" at that time, nobody could record multitrack audio, use photoshop/after effects / premiere etc, or do any kind of multimedia production without a Mac. My personal mission since then has been to shit all over that mindset.

I know what you're talking about. At the end of the nineties I worked with a company that was running Protools on Windows NT and not Mac. It was rather unusual. System could do 64 tracks of 24 bit @ 48kHz on a Pentium II full of effects, but that was in large part because audio processing was offloaded to DSP cards. That's Digital Signal Processors for those who don't know. Audio tracks where recorded to SCSI disks. I remember it was a very stable and good system but it was extremely picky on hardware.

@Jimmy9008 said in VLAN on Dell N4064 Stacked:

@Pete-S said in VLAN on Dell N4064 Stacked:

@Jimmy9008 said in VLAN on Dell N4064 Stacked:

Thats the LAG page. So unit 1, Te1/1 is LAG1. Unit 2, Te1/1 is LAG1 (both N4000). Then on the N3000 it has the same where Unit1 Te/1 and Unit2 Te/1 are LAG1. Traffic passes over these perfectly for vlan1.

Perfect, then goto VLAN, VLAN members and select vlan 2. The click so you get vlan 2 on LAG 1.
Now the LAG 1 will pass VLAN 2 as well.

Click Te1/1/1 on vlan2 to say 'U'?

No, further down, where it says LAG and then shows you the LAG groups.

@Jimmy9008 said in VLAN on Dell N4064 Stacked:

Thats the LAG page. So unit 1, Te1/1 is LAG1. Unit 2, Te1/1 is LAG1 (both N4000). Then on the N3000 it has the same where Unit1 Te/1 and Unit2 Te/1 are LAG1. Traffic passes over these perfectly for vlan1.

Perfect, then goto VLAN, VLAN members and select vlan 2. The click so you get vlan 2 on LAG 1.
Now the LAG 1 will pass VLAN 2 as well.

@Jimmy9008 said in VLAN on Dell N4064 Stacked:

Second image shows Te/1/1/1, which is LAG port. Its set to general to pass all vlans. (I think). Image 3 shows Po1.

LAG is not named Te1/1/1, it's an ordinary port (could be a member of a LAG group).

Look under Link Aggregation.

Or activate the freakin ssh port

@Jimmy9008 said in VLAN on Dell N4064 Stacked:

@Pete-S can you only do this through the console/com?

I think you can do it through the gui as well. It's a pretty basic requirement if you think about it - sharing vlans between switches.