#ESXI 6.5 RAID CARD INSTALL#

Also itвЂ™s almost always the case that an SSD with a higher random write IOPS rating is also higher performing on random read IOPS. All enterprise SSDs do well on reads, but itвЂ™s only a few that do well on writes for small block (4KB) random workload. This is because most storage IO from within VMware is random and uses small block sizes. Write IOPS rating for random 4KB block size is the single most important parameter to select an in-VMware host SSD. the two most important ssd selection criteria - write iops rating and endurance The more prevalent problem is when you experience high VM latencies (> 20ms peak latencies) even at low throughput (say 100MBps storage IO per host), then definitely go with write-intensive enterprise NVME SSDs, and not with SATA SSDs. However such high throughput is rare and so itвЂ™s not often that we run into this problem at customers. If the aggregate peak storage MBps from all VMs on a single ESXi host is greater than 100MBps, then the high latencies you are experiencing are a direct consequence of high throughput.

There are two types of storage performance problems in the VMware world. So thereвЂ™s no need for you to go through this article if you donвЂ™t have this problem. You have no storage performance issues if you have less than 5 milliseconds (ms) latency at the VM level at all times. Question вЂ“ What problem are you trying to solve?

Should you buy host SSDs from server vendor or retail?.Why do not use consumer SSDs though they have a high IOPS rating?.Performance and cost for our recommended SATA and NVME SSDs.Endurance and Write IOPS rating of the SSD are the two most important selection criteria.This blog article will cover the below topics.

#ESXI 6.5 RAID CARD INSTALL#

If you donвЂ™t have any slots in the host to install an SSD, then the only choice is to use the more expensive but higher performing host RAM as cache media. In the enterprise SATA SSD category, the Intel S4610 or Samsung SM883 are good choices. If you choose to go with SATA SSDs, you will also need a high queue depth RAID controller in the ESXi host. If you donвЂ™t have a spare U.2 NVME slot or a conventional PCIe slot in your ESXi host, which precludes you from using NVME SSDs, you could use enterprise SATA SSDs. The Samsung PM1735 (in PCIe form factor) and the Intel P4610 (2.5вЂі U.2 form factor) NVME SSDs are my favorites.

They are higher performing and cost just a little more than their lower performing SATA counterparts. In terms of price/performance, enterprise NVME SSDs have now become the best choice for in-VMware host caching media.

Esxi 6.5 raid card