I have an extra budget to come. To get some good things for my department, we are considering getting some SSDs for our virtualization infrastructure. The question is: Will Xenserver benefit from SSDs? This is not a simple question, because it becomes complicated when you think of the various possibilities of storage.
We don’t have the budget to set up an appropriate SAN, so network storage is temporarily impossible (The guest operating system will be stored on the host).
There is no doubt that if VMs are located on SSDs, they themselves will benefit in performance, but due to the low capacity of SSDs, we are considering making Xenserver itself It is possible to run SSD, but we questioned whether it would have any benefit (Does dom0 require high I/O performance? Does it matter? Or does VM only really benefit from SSD performance?).
Xenserver The configuration is fairly basic, so letting it run from a single disk is not a concern for us (we just put the new installation together and import the VM from the storage array).
Please advise. (but please Don’t just say, “Of course, SSDs are better” because it depends on how they are used).
As dunxd has already said, don’t waste money putting the management program on the SSD…I would rather put it on the 3.5-inch floppy disk on the raid 🙂
Seriously, where do SSD products come from? They are just a good toy you want, or have you done some analysis and found that your current storage performance limits your system?
In addition, SAN will bring you many benefits, you should consider shifting your budget or keep it in your pocket until you have enough SAN. They are also cheaper than people think-please remember To live, you can buy some “good enough” SAN (such as these) without filling it completely with disks, and add new disks as needed, if you choose from time to time to require more space (7200rpm near-line disk) or performance (10k, 15k) Disk) or absolute l33t performance (SSD), and mix and match as needed.
(We are actually considering buying MD3220i with dual controllers, about 15k disks for our virtual machines, for storing backups, logs And other 7k2 disks that slowly move data, we will have a lot of unused slots to fill the gap in the future, no matter what we need).
If you are using this kind of thing, you can also buy A new server with a lot of disk slots and use FreeNAS or something similar to build a SAN.
I have a few running Xenserver boxes (very good). Most of us Both are set up with RAID1 with two mechanical 7200rpm enterprise SATA drives, or RAID10 with 4 7200 enterprise SATA drives. Due to the high capacity of the dollar, sata drives and WD RE4 were chosen, so they have good quality and Good mechanical drive performance.
I have extra budget to get some good things for my department, and we are considering getting some SSDs for our virtualization infrastructure. The question is:
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Will Xenserver benefit from SSD? This is not a simple question, because it becomes complicated when you think of the various possibilities of storage.
We don’t have the budget to set up an appropriate SAN, so network storage is temporarily impossible (The guest operating system will be stored on the host).
There is no doubt that if VMs are located on SSDs, they themselves will benefit in performance, but due to the low capacity of SSDs, we are considering making Xenserver itself It is possible to run SSD, but we questioned whether it would have any benefit (Does dom0 require high I/O performance? Does it matter? Or does VM only really benefit from SSD performance?).
Xenserver The configuration is fairly basic, so letting it run from a single disk is not a concern for us (we just put the new installation together and import the VM from the storage array).
Please advise. (but please Don’t just say, “Of course, SSDs are better” because it depends on how they are used).
If you really want to get an SSD, you You should consider the workloads running on XenServer and which ones can benefit from higher IOPS and lower latency – typical candidates are database servers and high-traffic mail servers.
As dunxd As I said, don’t waste money putting the management program on the SSD…I would rather put it on the 3.5-inch floppy disk on the raid:)
Seriously, where did the SSD product come from? They are just a good toy you want, or have you done some analysis and found that your current storage performance limits your system?
In addition, SAN will bring you many benefits, you should consider shifting your budget or keep it in your pocket until you have enough SAN. They are also cheaper than people think-please remember To live, you can buy some “good enough” SAN (such as these) without filling it completely with disks, and add new disks as needed, if you choose from time to time to require more space (7200rpm near-line disk) or performance (10k, 15k) Disk) or absolute l33t performance (SSD), and mix and match as needed.
(We are actually considering buying MD3220i with dual controllers, about 15k disks for our virtual machines, for storing backups, logs And other 7k2 disks that slowly move data, we will have a lot of unused slots to fill the gap in the future, no matter what we need).
If you are using this kind of thing, you can also buy A new server with a large number of disk slots, and use FreeNAS or similar to build a SAN.