Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?
-
@scottalanmiller 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?:
Maybe I should see if I can install Hyper-V on an SD card.. I have an iDRAC with the card slot
No, don't do that. MS used to semi-support that long ago. Now they do not at all.
k then.. I guess I'll just leave the single SSD in and finish installing it to that. I started the install process to one Intel SSD then paused to come post my questions here.
-
@aaronstuder said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@scottalanmiller said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
Dell will often reject consumer drives. Or any non-Dell drives.
What? What do you mean reject them? They will complain, but the drives work just fine... At least everything I have tested.
Willard found out that some SSDs just don't work in Dell servers..
-
@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@scottalanmiller 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?:
Maybe I should see if I can install Hyper-V on an SD card.. I have an iDRAC with the card slot
No, don't do that. MS used to semi-support that long ago. Now they do not at all.
k then.. I guess I'll just leave the single SSD in and finish installing it to that. I started the install process to one Intel SSD then paused to come post my questions here.
FYI, this is a complete waste of a SSD drive. More IOPs wasted on something that can't/won't use it.
Why are you setting up Hyper-V today when you don't have drives to store the VM's on? Why not wait until you buy those 6+ large HDDs and make a OBR10 and install Hyper-V on there.
It doesn't need to be 8 drives, 6 is fine if that gives you the storage you need. Hyper-V install itself is pretty small, I'm guessing 20 GB or less.
-
@dashrender 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?:
@scottalanmiller 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?:
Maybe I should see if I can install Hyper-V on an SD card.. I have an iDRAC with the card slot
No, don't do that. MS used to semi-support that long ago. Now they do not at all.
k then.. I guess I'll just leave the single SSD in and finish installing it to that. I started the install process to one Intel SSD then paused to come post my questions here.
FYI, this is a complete waste of a SSD drive. More IOPs wasted on something that can't/won't use it.
Why are you setting up Hyper-V today when you don't have drives to store the VM's on? Why not wait until you buy those 6+ large HDDs and make a OBR10 and install Hyper-V on there.
It doesn't need to be 8 drives, 6 is fine if that gives you the storage you need. Hyper-V install itself is pretty small, I'm guessing 20 GB or less.
Hmm... well, I do have 4x 6TB 7200RPM SATA drives I was planning to use for something else, but I guess I could just use them for this.
-
@dave247 said in Enterprise 15K SAS drives vs consumer grade SSD in a Dell server?:
@dashrender 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?:
@scottalanmiller 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?:
Maybe I should see if I can install Hyper-V on an SD card.. I have an iDRAC with the card slot
No, don't do that. MS used to semi-support that long ago. Now they do not at all.
k then.. I guess I'll just leave the single SSD in and finish installing it to that. I started the install process to one Intel SSD then paused to come post my questions here.
FYI, this is a complete waste of a SSD drive. More IOPs wasted on something that can't/won't use it.
Why are you setting up Hyper-V today when you don't have drives to store the VM's on? Why not wait until you buy those 6+ large HDDs and make a OBR10 and install Hyper-V on there.
It doesn't need to be 8 drives, 6 is fine if that gives you the storage you need. Hyper-V install itself is pretty small, I'm guessing 20 GB or less.
Hmm... well, I do have 4x 6TB 7200RPM SATA drives I was planning to use for something else, but I guess I could just use them for this.
Maybe you should list all of the drives that you have to work with, and we can guide from there.
-
@scottalanmiller 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?:
@dashrender 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?:
@scottalanmiller 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?:
Maybe I should see if I can install Hyper-V on an SD card.. I have an iDRAC with the card slot
No, don't do that. MS used to semi-support that long ago. Now they do not at all.
k then.. I guess I'll just leave the single SSD in and finish installing it to that. I started the install process to one Intel SSD then paused to come post my questions here.
FYI, this is a complete waste of a SSD drive. More IOPs wasted on something that can't/won't use it.
Why are you setting up Hyper-V today when you don't have drives to store the VM's on? Why not wait until you buy those 6+ large HDDs and make a OBR10 and install Hyper-V on there.
It doesn't need to be 8 drives, 6 is fine if that gives you the storage you need. Hyper-V install itself is pretty small, I'm guessing 20 GB or less.
Hmm... well, I do have 4x 6TB 7200RPM SATA drives I was planning to use for something else, but I guess I could just use them for this.
Maybe you should list all of the drives that you have to work with, and we can guide from there.
haha.. sorry.. ok so I have 4x 6TB drives and then I have a ton of 2.5" 300GB 10k and 15k SAS drives, but the problem here is I only have a couple of 2.5" to 3.5" caddie spacers.. I'd have to really dig to find more.
So if I just wanted to use the 4x 6TB drives, would I create a RAID array and then create two separate volumes on that, one for Hyper-V and one for storage, or just have one volume and install Hyper-V to that?
-
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?
-
@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?
-
If you go with SSD's you'd use OBR5.
If you went with 15K drives you'd use OBR6.
-
@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?
-
@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.
-
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
-
@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
-
@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.
-
@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.
-
@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?
-
@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.
-
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.
-
@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.
-
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".
