从 Red Hat Enterprise Linux 6.4 开始，ext4 和 XFS 文件系统都完全支持 discard。 要在设备上启用 discard 命令，请使用 mount 命令的 discard 选项。 例如：要将 /dev/sda2 挂载到启用了 discard 的 /mnt 中，请使用：

Using the System Security Services Daemon (SSSD) provides multiple benefits regarding user identity retrieval and user authentication. SSSD optionally keeps a cache of user identities and credentials retrieved from remote providers.

Solid-state disks (SSD) are storage devices that use NAND flash chips to persistently store data. This sets them apart from previous generations of disks, which store data in rotating, magnetic platters.

2020年6月23日 · Both drive technologies store the operating system, application programs, and your data so that they can be moved into main memory (RAM) for use. The functional advantages of SSD over HDD are twofold, and both are due to the solid-state nature of the SSD. First, SSDs have no moving parts to wear out or break.

• A specification for accessing solid-state drives (SSDs) attached through the PCI Express (PCIe) bus. • Specification defines an optimized register interface, command set and feature set. • PCIe SSD devices designed based on the NVMe specification are called NVMe-based PCIe SSD’s

Which disk scheduler should you use with high performance SSD and NVMe storage on RHEL 8? Which disk scheduler is used by default? Environment. Red Hat Enterprise Linux (RHEL) 8

Access Red Hat’s knowledge, guidance, and support through your subscription. Chapter 21. Solid-State Disk Deployment Guidelines Red Hat Enterprise Linux 7 | Red Hat Customer Portal

2018年5月22日 · rhel7支持固态硬盘，并能够针对ssd特性做出优化，例如在i/o调度器中使用适合ssd的算法，以及管理固态硬盘的写入放大等问题。 I/O堆栈和限制 输入/输出（I/O）是计算机系统中数据交换的过程，I/O堆栈是指与数据读写 . . .

Is there TRIM (SCSI or block discard) support for SSD in Red Hat Enterprise Linux? Is TRIM properly transmitted through layers like LVM, MD (software raid), filesystems etc? Is SCSI discard on or off by default for ext4? What is fstrim tool and how can we use discard function to reclaim my unused disk space for filesystems on ssd disk drives?

2018年2月28日 · 现如今越来越多的中高端ssd开始选择pci-e接口来进行ssd与主板的对接，以提升读写速度。作为一名普通用户，我们应该选择高端的pci-essd还是satassd？二者有何区别？所以在本篇文章中笔者将详细介绍pci-e通道ssd与pci...