Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?
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So with 4x 6TB drives in RAID 10 (the only option with four drives other than RAID 0 because RAID 5 would be insane, even in a lab) you might as well go with your original ideal of putting in as many SSD or 15K drives as you can get caddies for, making a smaller array of those, and using that, too. Can you get four and four?
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@scottalanmiller said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
you might as well go with your original ideal of putting in as many SSD or 15K drives as you can get caddies for, making a smaller array of those, and using that, too. Can you get four and four?
Are you saying use 4+ SSD or 15k drives in RIAD10 and making the smaller array and using it for only Hyper-V - in addition to another RAID10 array for storage?
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If you go with SSD's you'd use OBR5.
If you went with 15K drives you'd use OBR6.
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@dustinb3403 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
If you go with SSD's you'd use OBR5.
If you went with 15K drives you'd use OBR6.
Why?
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@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@dustinb3403 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
If you go with SSD's you'd use OBR5.
If you went with 15K drives you'd use OBR6.
Why?
OBR5 is safe (enough) because URE's don't happen with SSD's. SSD's just die. So you'd replace it as soon as it died. They also rebuild way faster.
OBR6 with 15K drives because you have a lot of them, but they are smaller capacity (300GB). So you'd get enough performance and the most usable space from the array.
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Where as using OBR10 with 15k drives will be faster than OBR6 with 15k drives, your usable storage is half of what you can fit into the server.
(12x300)/2
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@dustinb3403 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@dustinb3403 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
If you go with SSD's you'd use OBR5.
If you went with 15K drives you'd use OBR6.
Why?
OBR5 is safe (enough) because URE's don't happen with SSD's. SSD's just die. So you'd replace it as soon as it died. They also rebuild way faster.
OBR6 with 15K drives because you have a lot of them, but they are smaller capacity (300GB). So you'd get enough performance and the most usable space from the array.
oooh. I didn't know that about URE's and SSD's
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@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
4x 6TB drives
That's 12TB usable in RAID 10. Not sure why that wouldn't be a good option.
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@coliver said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
4x 6TB drives
That's 12TB usable in RAID 10. Not sure why that wouldn't be a good option.
Because I was planning to not use them for this.. but now I'm considering changing my mind.
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@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@coliver said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
4x 6TB drives
That's 12TB usable in RAID 10. Not sure why that wouldn't be a good option.
Because I was planning to not use them for this.. but now I'm considering changing my mind.
Oh I see. What were you planning on using them for? Could you roll that into this via a VM and application?
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@coliver said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@coliver said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
4x 6TB drives
That's 12TB usable in RAID 10. Not sure why that wouldn't be a good option.
Because I was planning to not use them for this.. but now I'm considering changing my mind.
Oh I see. What were you planning on using them for? Could you roll that into this via a VM and application?
They are in a different server now, holding some files.
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Spend the $15 to get a USB drive to be the install target for Hyper-V, and then boot the server from that USB drive each time. Like others have said, keep the SSD to give yourself some fast storage to play with and not to run a hypervisor.
If you're only playing with a single SSD you could even leverage it and use the free version of Starwind to accelerate the VMs running on the spinning disk datastore (I think). Someone else may want to verify this specific point.
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@networknerd said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
Spend the $15 to get a USB drive to be the install target for Hyper-V, and then boot the server from that USB drive each time. Like others have said, keep the SSD to give yourself some fast storage to play with and not to run a hypervisor.
If you're only playing with a single SSD you could even leverage it and use the free version of Starwind to accelerate the VMs running on the spinning disk datastore (I think). Someone else may want to verify this specific point.
I do have plenty of extra USB drives. I was considering that also but I don't know if I want a USB drive sticking out of the back of my server.
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Did you say what size the SAS drives are (2.5" or 3.5")? I missed it if so. I'm curious if the SSDs will fit in the Dell drive cage chassis properly if they are 2.5" and the SAS disks you have are 3.5".
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@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@networknerd said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
Spend the $15 to get a USB drive to be the install target for Hyper-V, and then boot the server from that USB drive each time. Like others have said, keep the SSD to give yourself some fast storage to play with and not to run a hypervisor.
If you're only playing with a single SSD you could even leverage it and use the free version of Starwind to accelerate the VMs running on the spinning disk datastore (I think). Someone else may want to verify this specific point.
I do have plenty of extra USB drives. I was considering that also but I don't know if I want a USB drive sticking out of the back of my server.
You can get a really slim USB stick online for cheap.
https://www.amazon.com/SanDisk-Cruzer-Low-Profile-Drive-SDCZ33-008G-B35/dp/B005FYNSUA/ref=sr_1_3?ie=UTF8&qid=1506622655&sr=8-3&keywords=small+usb+drive -
@networknerd said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
Did you say what size the SAS drives are (2.5" or 3.5")? I missed it if so. I'm curious if the SSDs will fit in the Dell drive cage chassis properly if they are 2.5" and the SAS disks you have are 3.5".
SAS drives are 2.5" and I have some caddie spacers that let me use 2.5 in 3.5 caddie. I do already have one 2.5" consumer SSD running in this server, waiting for me to finish installing Hyper-V as we speak.
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@networknerd said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@networknerd said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
Spend the $15 to get a USB drive to be the install target for Hyper-V, and then boot the server from that USB drive each time. Like others have said, keep the SSD to give yourself some fast storage to play with and not to run a hypervisor.
If you're only playing with a single SSD you could even leverage it and use the free version of Starwind to accelerate the VMs running on the spinning disk datastore (I think). Someone else may want to verify this specific point.
I do have plenty of extra USB drives. I was considering that also but I don't know if I want a USB drive sticking out of the back of my server.
You can get a really slim USB stick online for cheap.
https://www.amazon.com/SanDisk-Cruzer-Low-Profile-Drive-SDCZ33-008G-B35/dp/B005FYNSUA/ref=sr_1_3?ie=UTF8&qid=1506622655&sr=8-3&keywords=small+usb+driveoh man.. yes, that would be a lot better. Maybe I will just install Hyper-v on my current USB just for S&G. I've never installed Hyper-v before so I don't mind having to do it again on a different, smaller USB later..
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@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@networknerd said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@networknerd said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
Spend the $15 to get a USB drive to be the install target for Hyper-V, and then boot the server from that USB drive each time. Like others have said, keep the SSD to give yourself some fast storage to play with and not to run a hypervisor.
If you're only playing with a single SSD you could even leverage it and use the free version of Starwind to accelerate the VMs running on the spinning disk datastore (I think). Someone else may want to verify this specific point.
I do have plenty of extra USB drives. I was considering that also but I don't know if I want a USB drive sticking out of the back of my server.
You can get a really slim USB stick online for cheap.
https://www.amazon.com/SanDisk-Cruzer-Low-Profile-Drive-SDCZ33-008G-B35/dp/B005FYNSUA/ref=sr_1_3?ie=UTF8&qid=1506622655&sr=8-3&keywords=small+usb+driveoh man.. yes, that would be a lot better. Maybe I will just install Hyper-v on my current USB just for S&G. I've never installed Hyper-v before so I don't mind having to do it again on a different, smaller USB later..
It never hurts to practice so you have the install down cold.
That way if this is used in production at some point (I mean Hyper-V and not your lab gear), you will be ready for a complete re-install if absolutely needed in a DR scenario. -
@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
I assume both will work fine but I've never really used consumer SSD's on a Dell server before.. input?
Don't do it. It's going to suck, if it even works.
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It is extremely ill advised to run Hyper-V from a USB or SD-Card.
It's not officially supported and prone to failure.
