Citing @StorageNinja: "...Do not use CrystalDiskMark for testing a hypervisor or server workload. It was designed for sanity tests on desktop systems. Virtual environments involve multiple disks on different controllers, on different VMs and parallel IO can either yield higher results or far worse (IO blender effect). Test something realistic with what you are running.
VMware HCIbench isn't bad for spinning up a bunch of workers and running different profiles or DiskSPD and Intel IOmeter. If you are going to run SQL, HammerDB might be worth running (or SLOB if you will be running Oracle). Given people using CrystalDiskMark and stuff tend to either test unrealistically small or large working sets (and therefore test Cache, or what the storage layer looks like with a full file system)..."
Posts made by taurex
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RE: RAID5 SSD Performance Expectations
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RE: Windows Domain routing question - dual-nic
Whatever device does the local routing for you, it needs to be aware of the Eth 4 LAN and have
a static route pointing to it as @Dashrender already advised. ICMP needs to be allowed on Windows Firewall of the host to test this. You should only have a single default gateway per host. Create a persistent route in CMD on the host for your 10.200.1.0 network traffic to exit out of its own interface or next-hop address instead. -
RE: How can we recover data from Hard Drives were on RAID 10 without controller?
Looks like it really boils down to the lack of following the 3-2-1 rule or its revised version - 3-2-2 where you have both cloud-based and local external backups of your NAS' important data in your case.
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RE: How can we recover data from Hard Drives were on RAID 10 without controller?
@openit Not sure whether the same way would work with QNAP RAID but Synology has a KB on it: https://www.synology.com/en-global/knowledgebase/DSM/tutorial/Storage/How_can_I_recover_data_from_my_DiskStation_using_a_PC
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RE: Share From Synology Stopped Working
On a side note, why on Earth are you using SMB1 protocol? Turn it off everywhere, It's insanely insecure. Ransomware loves SMB1. Also, turn on SMB support on the Synology all the way up to SMB3.
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RE: IPsec Site-to-Site
These are the current Australian government cybersecurity guidelines on recommended cryptographic algorithms. Can be a good reference point to start from.EDIT: link - https://www.cyber.gov.au/ism/guidelines-for-using-cryptography
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RE: File transfer drop
Are you sure, you were actually getting 1.6 GB/s, not 1.6 Gbit/sec with iPerf or similar? 1.6 GB/s is more than the theoretical maximum bandwidth of a 10 Gbit link unless it's a sum of results for each of two vNICs or something. Copypasting the file across remote desktops won't give you an accurate figure, btw. With coping large files over 10 Gbit links or above you'd need Jumbo Frames enabled on all devices along the path. Otherwise, you won't be able to fully utilise the available bandwidth. Your storage config should not be a bottleneck. On the other hand, file copy is not a real measuring tool for VM storage performance. You should be using something like diskSPD or IOmeter to get more accurate results inside VMs for typical virtual workloads (random in nature). Storage latency and IOPS are more accurate metrics for them IMO.
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RE: Questions on Dell XPS 13 2018 year model
From my experience, most docking stations work seamlessly plug and play, even cheaper ones. There used to be a need for a manual DisplayLink driver update for Win 10 but not anymore.
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RE: Connectwise Control / Screenconnect recommends you break the law to run their software
I have to deal with this from time to time. Usually, some crappy legacy client-server LOB apps. The workloads are normally so tiny and simple that suggesting server hardware for them is a waste of money. Some of their vendors don't even add server O/Ses in the technical requirements. Most small shops don't even have enough physical space to run server hardware properly let alone willing to spend a few grand on a server, MS licencing and the labour to set it all up for them.
I remember the advice @Obsolesce gave the other day, just buy the least expensive Server Essentials licence and stick it on a Win 10 box where the app runs. This won't help anyone with more than 25 users or devices, though
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RE: Hyper V Tape passthrough possible?
@Donahue said in Hyper V Tape passthrough possible?:
I've just installed on bare metal, but now I've run into an issue where backup tape jobs are not supported in my version of Veeam. I can backup files, but not VM's unless I upgrade to "enterprise" veeam
Why wouldn't you simply select the existing Veeam backup folders/files and archive them to tape? Here is an excerpt from the official Veeam guide: "When a backup to tape job runs, it does not create new backups: it locates already existing backups and copies them from backup repository to tape. You need to set the source of the tape job: jobs and/or backup repositories."
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RE: Hyper V Tape passthrough possible?
@Donahue You're right. I saw this here: https://forums.starwindsoftware.com/viewtopic.php?f=26&t=4098 Free VSAN with a 30-day trial Starwind management console might be sufficient but this will cost your Hyper-V host an extra Server Standard OSE licence unless you're using Datacenter with it.
Edit
A cheap second-hand physical Windows server with the directly attached tape drive is another alternative as others here already suggested. I have one running for offsite Veeam tape backups of vSphere VMs.Saw your other reply. I'd simply run Veeam Console bare-metal on that server with the attached tape drive since you're not using it for anything else. It's the best practice too. Better have a Veeam backup target on another host or NAS box too.
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RE: Hyper V Tape passthrough possible?
Hey @Donahue. Have you looked at free Starwind Tape Redirector by any chance? It basically allows you to present a tape drive attached to the host as an ISCSI LUN to your Veeam B&R's Windows Server VM so the backup software would see it directly installed. Wouldn't this solve your problem?
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RE: Windows Server - average RAM, vCPU allocation?
Normally, I start with 2 vCPU and 4 GB RAM for GUI-enabled Windows guests and 2 vCPUs with 2 GB RAM if they're GUI-less. Lots of trivial AD workloads like DC, DHCP, DNS, NPS etc. run fine with 1 vCPU but I found assigning one extra virtual CPU does make updates running somewhat faster. In most cases in my experience where VM CPU usage jumped above 75%, the spinning rust was the culprit, especially if a SAN was in use, it had nothing to do with the actual host's CPU power.
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RE: netstat on local systems shows high number of ipv4/6 Received Packets Discarded, Redirects, Failed Connection Attempts, Reset Connections and Segments Retransmitted
Normally, you don't want any IP phones with 100 Mbit/s PC ports to avoid network bottlenecks. I've seen issues with duplex mismatches with them too.
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RE: netstat on local systems shows high number of ipv4/6 Received Packets Discarded, Redirects, Failed Connection Attempts, Reset Connections and Segments Retransmitted
Most Tx and Rx errors on switch ports were usually related to poorly terminated cabling in my experience, very rarely to misconfigured or faulty interfaces. Reset counters as already suggested by @dafyre at both ends and see if the numbers grow up quickly again.
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RE: MSP Backup Product - Local Storage
@scottalanmiller said in MSP Backup Product - Local Storage:
@taurex said in MSP Backup Product - Local Storage:
@CCWTech You'd likely need something that's known as Backup as a Service (BaaS) app. You might have to rely only on agent-based backups for VMs without a backup appliance. I believe the main reason behind backup appliances/servers is agentless VM backups.
BaaS essentially always means that it is going to cloud. If it isn't, it's hard to call it a service as you are doing most of it and there isn't any back up service.
Appliances don't imply agentless, I'm sure some appliance does that. But the big appliance players almost all do agent and agentless, and some are only one or the other. The biggest ones, like Datto and Unitrends, do agents for sure... one exclusively, one optionally. And a Veeam based appliance will do either, too.
Thanks for pointing that out, Scott. I stand corrected. I'm quite interested myself if there's a backup solution out there with a hosted central management console. Although, if it's a Linux based appliance that can manage backups of Windows-based VMs, I'd check it out too. Veeam is excellent but I find it too Windows-centric. No Linux-based central management, proxies have to be Windows either etc.
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RE: MSP Backup Product - Local Storage
@CCWTech You'd likely need something that's known as Backup as a Service (BaaS) app. You might have to rely only on agent-based backups for VMs without a backup appliance. I believe the main reason behind backup appliances/servers is agentless VM backups.
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RE: GPO question
@JasGot said in GPO question:
@taurex said in GPO question:
From my experience, BYODs make resetting AD passwords for students a time-waster for IT. You should delegate this to non-IT staff like school librarians and teach them how to use a password reset app like Wisesoft's Password Control (with giving them appropriate permissions like only for students OU, of course) or get your software developer to create a web-based password reset kiosk for students and staff with BYODs.
We've learned since the original post, this is not an AD/OU environment. Your point about 3rd party password control is a great option for domain admins though.....
But those students still have accounts in OP's AD, right? It's only their devices are BYOD.
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RE: GPO question
From my experience, BYODs make resetting AD passwords for students a time-waster for IT. You should delegate this to non-IT staff like school librarians and teach them how to use a password reset app like Wisesoft's Password Control (with giving them appropriate permissions like only for students OU, of course) or get your software developer to create a web-based password reset kiosk for students and staff with BYODs.