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| Slow SSD disks https://3parug.net/viewtopic.php?f=18&t=3944 |
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| Author: | vpsl [ Thu Feb 01, 2024 3:57 am ] |
| Post subject: | Slow SSD disks |
Hello, I have an 8440 storage with 200 fc 15K disks. Recently, I added 20 of 1.9 terabytes ssd disks to the device and moved some of the existing virtual volumes with 10 terabytes of space to the ssd disks with the tune tool, but after that, the database admin told me that ssd disks respond slower than hdd. Any idea? |
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| Author: | MammaGutt [ Thu Feb 01, 2024 5:39 am ] |
| Post subject: | Re: Slow SSD disks |
vpsl wrote: Hello, I have an 8440 storage with 200 fc 15K disks. Recently, I added 20 of 1.9 terabytes ssd disks to the device and moved some of the existing virtual volumes with 10 terabytes of space to the ssd disks with the tune tool, but after that, the database admin told me that ssd disks respond slower than hdd. Any idea? Slower in terms of what? bandwidth? latency? What are the DB guys doing? what is the configuration of FC CPG and SSD CPG? |
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