ISCSI drives shows up as an internal drive on the client. You can format and install software on it. You can install an operating system and boot it on an ISCSI drive. A network share shows up as a network drive and you can't format or boot from it.
1 target, 2 initiators, no bueno for iSCSI (at least without file locking, e.g. cluster aware). This video saved me today 👍 100%. Thank you, Chris. Kindest regards, friends and neighbours.
Hi Chris not a true indication of speed , Freenas box had additional VM's on , one also needs to look at the hardware layout and configuration aswell as software tuning , fyi nfs is on par with iscsi speed wise , have a great one and thanks a bunch it was quite informative :-)
Thanks Chris for being the only good explanation of synology iscsi that I could find. I'm trying to install nobara that you reviewed recently and noticed that it had the option to install on an iscsi disc. Of course that opened a Pandora's box for me. I hit a problem where it complained about needing something enabled to be able to boot from an iscsi. Unfortunately I'm back in my desktop now but it was like iB** I think. I'd love to see an guide for numpties like me on how to install usable linux desktop os' on virtual machines. I see many guides for specific parts of the tech with implied foreknowledge but nothing with a general overview.
Is iscsi a good option to play games through the network ? (Which recquires a lot of read/writes cycles) for example if the internal hardrives of the pc are already full ?
Is there a way to access the iscsi folder like a google drive? It trying to access it but it looks like i can only access the drive shared on the network if that makes sense.
Great video and really helpful but have you got any advice on how to use a Synology iSCSI in an XCP-ng Pool. I cam only get one host to connect to the Target/LUN and it cannot repair itself the connections for the other hosts? I have enabled multiple connections. NFS is working but thought iSCSI would be more secure and potentially faster. Any advice or ideas would be amazing.
Chris Titus Tech Sorry for offtopic. Check AMD Contrast Adaptive Sharpening (links below). It restores most of the image quality when my 1080gtx doesn't have compute power to do native 4k60 and I need to use in game resolution scaling. Sidenote Reshade would be nice to have in lutris like dxvk. Sources; www.reddit.com/r/linux_gaming/comments/b2hi3g/reshade_working_in_wine_43/ wccftech.com/amd-fidelityfx-cas-got-ported-to-reshade/
Can I expand my synology LUN without having to disconnect it from my VMware host? Or should I completely power off the vm’s, expand the Lun and then reconnect everything
Certainly, 3 Hosts (2x i5 3470 8 GB RAM 128GB SSD for Hypervisor and 1x Intel nuc i5 5th Gen). These were recycled units that I refurbished and now are functional. Old hardware can be just as good as new and in some instances, I'd rather have 2 old computers than 1 new one.
I recall a young friend who said skuzki which I was not knowing. he was an apple kid. How can I get to the underlying code? I have the crazy windows 10
TWO DECADES ago we had 15k RPM spinny drives that had to be on SCIS cause IDE/ATA wasnt fast enough to keep o up with the drives. But since Sata went mainstream, that scsi dependency of the 15k drives ended... yet we DONT see 15k drives, nor even 10k.. the spinnys are still in the 7200 stone age. Why didnt we see 15k drives explode in market share ~2005 ?
15K drives generate a lot of heat and noise so mostly servers used them. Today well, SSD are the the default and spinning drives are only used if you need a lot of space cheap, but even that is starting to change.
I just wish Synology used much better CPU's. Why no option for a Core i3? Yes more expensive, but if you are willing to pay for it, then the more powerful CPU's should be there.
I have found iSCSI connections are very unstable in Windows 10. I have had several watchdog BSOD reboots while doing bulk transfers to an iSCSI device. I was hoping to use it for bulk transfer from one NAS to another for backups. I also have a real problem with connections not happening. I end up having to manually go into the initiator and disconnect and reconnect before I can use it. I have also had the SCSI connection wander away in the middle of a file transfer and stop and never comeback.
You don’t seem to understand MC/S. An I SCSI Target should only be connected to ONE system as the access is at the BLOCK level and you will corrupt the LUN if being accessed by more than 1 system. If you need multiple systems to access the same iSCSI LUN, use NFS.
In most instances you would be correct, HOWEVER, these hosts in the hypervisor are set up as a CLUSTER so you can do multi-session with iSCSI without it corrupting.
I’m sure you were NOT using SMB to host the VM files!! Learn your terms correctly: You were using NFS! (If you did use SMB, it shows your expertise). And, iSCSI will ALWAYS be faster than NFS/SMB for VMs due to how each handles sync writes. I feel for all the people that follow IT people that do not master their field.
iSCSI will not ALWAYS be faster. VMWare has a lot of optimizations specifically around NFS and it can outperform iSCSI in stock instances. To really beat NFS, iSCSI needs Link Aggregation and Multipathing in a VMWare environment. Also, this is just a home lab for all kinds of tests, so I like to do some wacky things just to see if they can be done. In business, I always recommend doing your performance tests and figuring out which one is better for your environment.
ISCSI drives shows up as an internal drive on the client. You can format and install software on it. You can install an operating system and boot it on an ISCSI drive. A network share shows up as a network drive and you can't format or boot from it.
This is a good point that I didn't bring up in the video.
YOU ARE THE REAL MVP
Thanks for this explanation. Less is more...
Thanks Sten, i´ve never tought about it. Thats an eye opener. Thanks man.
1 target, 2 initiators, no bueno for iSCSI (at least without file locking, e.g. cluster aware). This video saved me today 👍 100%.
Thank you, Chris. Kindest regards, friends and neighbours.
glad you were transparent about the hardware differences.
Thank you, Chris.
Hi Chris not a true indication of speed , Freenas box had additional VM's on , one also needs to look at the hardware layout and configuration aswell as software tuning , fyi nfs is on par with iscsi speed wise , have a great one and thanks a bunch it was quite informative :-)
Chris, aren't there any better ways to check disk performance than a reboot?
great video, love this stuff , have a nice day chris....
Thanks Chris for being the only good explanation of synology iscsi that I could find. I'm trying to install nobara that you reviewed recently and noticed that it had the option to install on an iscsi disc. Of course that opened a Pandora's box for me. I hit a problem where it complained about needing something enabled to be able to boot from an iscsi. Unfortunately I'm back in my desktop now but it was like iB** I think. I'd love to see an guide for numpties like me on how to install usable linux desktop os' on virtual machines. I see many guides for specific parts of the tech with implied foreknowledge but nothing with a general overview.
Interesting...
And I have been learning about iSCSI, PATA, etc...
Is iscsi a good option to play games through the network ? (Which recquires a lot of read/writes cycles)
for example if the internal hardrives of the pc are already full ?
Is there a way to access the iscsi folder like a google drive? It trying to access it but it looks like i can only access the drive shared on the network if that makes sense.
Great video and really helpful but have you got any advice on how to use a Synology iSCSI in an XCP-ng Pool. I cam only get one host to connect to the Target/LUN and it cannot repair itself the connections for the other hosts? I have enabled multiple connections. NFS is working but thought iSCSI would be more secure and potentially faster. Any advice or ideas would be amazing.
Chris Titus Tech Sorry for offtopic. Check AMD Contrast Adaptive Sharpening (links below). It restores most of the image quality when my 1080gtx doesn't have compute power to do native 4k60 and I need to use in game resolution scaling. Sidenote Reshade would be nice to have in lutris like dxvk.
Sources;
www.reddit.com/r/linux_gaming/comments/b2hi3g/reshade_working_in_wine_43/
wccftech.com/amd-fidelityfx-cas-got-ported-to-reshade/
9:44
Chris, you seem to have a lack of entropy. Haveged could help, the Archwiki gives proper instructions (on how to check if you need it).
Hey Chris do you like your 1019+ NAS? Why did you choose that one of all of the Synology NAS's?
Can I expand my synology LUN without having to disconnect it from my VMware host? Or should I completely power off the vm’s, expand the Lun and then reconnect everything
Could you please Share your XCP-NG Server Specs please? Thanks Chris!
Certainly, 3 Hosts (2x i5 3470 8 GB RAM 128GB SSD for Hypervisor and 1x Intel nuc i5 5th Gen). These were recycled units that I refurbished and now are functional. Old hardware can be just as good as new and in some instances, I'd rather have 2 old computers than 1 new one.
@Chris Titus Tech many thanks for the reply. I appreciate you sharing your thoughts, knowledge and ideas. Have a wonderful day!
What "repairs" (mentioned) to Plex did you need to do after the migration?
I recall a young friend who said skuzki which I was not knowing. he was an apple kid. How can I get to the underlying code? I have the crazy windows 10
TWO DECADES ago we had 15k RPM spinny drives that had to be on SCIS
cause IDE/ATA wasnt fast enough to keep o up with the drives. But since Sata went mainstream, that scsi dependency of the 15k drives ended... yet we DONT see 15k drives, nor even 10k.. the spinnys are still in the 7200 stone age. Why didnt we see 15k drives explode in market share ~2005 ?
15K drives generate a lot of heat and noise so mostly servers used them. Today well, SSD are the the default and spinning drives are only used if you need a lot of space cheap, but even that is starting to change.
I just wish Synology used much better CPU's. Why no option for a Core i3? Yes more expensive, but if you are willing to pay for it, then the more powerful CPU's should be there.
That's my major gripe as well. Such excellent devices, yet they slap CPUs from the Bronze Age in there. Smh.
I have found iSCSI connections are very unstable in Windows 10. I have had several watchdog BSOD reboots while doing bulk transfers to an iSCSI device. I was hoping to use it for bulk transfer from one NAS to another for backups. I also have a real problem with connections not happening. I end up having to manually go into the initiator and disconnect and reconnect before I can use it. I have also had the SCSI connection wander away in the middle of a file transfer and stop and never comeback.
your background looks like hacker background
Just call me Hackerman!
Try "sudo reboot now"
First?
😀
Why would you make non-sense test instead of just measuring speed with a proper tool...
You don’t seem to understand MC/S.
An I SCSI Target should only be connected to ONE system as the access is at the BLOCK level and you will corrupt the LUN if being accessed by more than 1 system.
If you need multiple systems to access the same iSCSI LUN, use NFS.
In most instances you would be correct, HOWEVER, these hosts in the hypervisor are set up as a CLUSTER so you can do multi-session with iSCSI without it corrupting.
I’m sure you were NOT using SMB to host the VM files!!
Learn your terms correctly: You were using NFS! (If you did use SMB, it shows your expertise).
And, iSCSI will ALWAYS be faster than NFS/SMB for VMs due to how each handles sync writes.
I feel for all the people that follow IT people that do not master their field.
iSCSI will not ALWAYS be faster. VMWare has a lot of optimizations specifically around NFS and it can outperform iSCSI in stock instances. To really beat NFS, iSCSI needs Link Aggregation and Multipathing in a VMWare environment. Also, this is just a home lab for all kinds of tests, so I like to do some wacky things just to see if they can be done. In business, I always recommend doing your performance tests and figuring out which one is better for your environment.