To match an ever-growing need for data storage space, Inventec (2356.TW), one of the key suppliers of world’s leading server brands, hyperscale data centers and server system integrators, announced the arrival of Entei – a 2U24Bay Storage Server System to support dual 2nd Gen Intel Xeon Scalable processors.
What is the best solid state drive on the market? What is the fastest SSD? What is the best buy SSD? We answer these complex questions this buying guide.
Solid state drives (SSDs) are now available in multiple form factors, capacities, speeds, functions and price ranges. Smaller PCIe and M.2. form factors that can move the power of flash closer to the CPU.
All the drive vendors who matches the same capacity may not have the same size. Drive coercion is a storage controller property to force (coerced) the drive capacity to the minimal size supported by the drive in the disk group.
The source article provides you the method to run dd in ESXi.
dd if=/dev/zero of=/vmfs/devices/disks/mpx.vmhba1:C0:T3:L0 bs=512 count=10 conv=notrunc
Source: StorageMonk: Running dd on ESX
Collection of configuration which can be used for preconditioning and FIO tests.
Disk write cache is a feature provided by drive vendors to improve the performance of the disks.
This feature can result in data loss if there are sudden power outages.
It depends on the application to decide whether to enable disk write cache or not.
For SATA SSD drives the following commands can be used to enable and disable write caching.
To know write caching is enabled/disabled
hdparm -W /dev/sda
To enable write cache
hdparm -W 1 /dev/sda
To disable write cache
hdparm -W 0 /dev/sda
where, /dev/sda is example SATA SSD used.
You can get the details of the drive susing lsscsi command.