No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Huawei V2 and V3 Server RAID Controller Card User Guide 36

This document describes the appearances and features of the redundant array of independent disks (RAID) controller cards, how to configure properties for the RAID controller cards, and how to install drivers. The RAID controller cards include the LSI SAS2208, LSI SAS2308, LSI SAS3008, LSI SAS3108, LSI SoftRAID, PM8060, and PM8068.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Hard Drive Striping

Hard Drive Striping

Multiple processes accessing a drive at the same time may cause drive conflicts. Most drives have a threshold for the access count (I/O operations per second) and data transmission rate (data volume transmitted per second), above which new access requests are suspended.

Striping technology evenly distributes I/O loads across multiple physical drives. It divides continuous data into multiple blocks and saves them to different drives. This allows multiple processes to access these data blocks without conflict. Striping also optimizes concurrent processing performance in sequential access to data.

The striping effect depends on:

  • Strip width: the number of strips that can be concurrently read or written.

    The strip width equals the number of physical drives in a RAID array. Increasing the strip width improves RAID read/write performance. A RAID array with eight 18 GB drives transmits data better than an equivalent RAID array with four 36 GB drives.

  • Strip size: the size of each data block on a drive.

Hard drive striping allows the storage space of each array member drive to be partitioned into stripes that can vary in strip size.

The PM8068 supports multiple strip sizes, including 8 KB, 16 KB, 32 KB, 64 KB, 128 KB, 256 KB, 512 KB, and 1 MB.

Translation
Download
Updated: 2019-11-01

Document ID: EDOC1000004186

Views: 708099

Downloads: 20599

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next