Data distribution method for diskless network server based on solid state disk (SSD) and hard disk drive (HDD) hybrid storage

A network server and data distribution technology, applied in the field of diskless network server data distribution based on SSD and HDD hybrid storage, can solve the problem of easy wear and tear of storage media, improve read and write performance, improve hit rate, and reduce write-back to disk effect of probability

Inactive Publication Date: 2011-09-14
HUNAN UNIV
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Problems solved by technology

[0010] The technical problem to be solved by the present invention is, aiming at the server I/O performance bottleneck caused by the concurrent operation of the current diskless workstation, and the problem that the storage medium is easily lost due to the write-back of a small amount of data in

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  • Data distribution method for diskless network server based on solid state disk (SSD) and hard disk drive (HDD) hybrid storage
  • Data distribution method for diskless network server based on solid state disk (SSD) and hard disk drive (HDD) hybrid storage
  • Data distribution method for diskless network server based on solid state disk (SSD) and hard disk drive (HDD) hybrid storage

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Embodiment Construction

[0051] Figure 4 It shows the division of SSD shared area and HDD workstation private area. Most of the system data read by all workstations is located in SSD, and each workstation has its own private data stored in HDD. HDD is divided into three areas: the first area is the extension block rewriting identification linear table, the second area is the redirection address index after each workstation rewrites each expansion block, and the third area is the private data area of ​​each workstation. Each workstation will have a write-back operation to the shared area in the SSD during the startup process. In order to avoid data inconsistency caused by the write-back of each workstation to the shared area, the rewrite operation is identified by constructing an extended block rewrite flag. After addressing and encoding the SSD shared area according to the extended block, each extended block in the SSD shared area corresponds to 1 bit to identify whether the extended block has been ...

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Abstract

The invention discloses a data distribution method for a diskless network server based on solid state disk (SSD) and hard disk drive (HDD) hybrid storage. The method comprises the following steps of: deriving an SSD as a system disk shared by all the workstations in a diskless network; installing an operating system and application software shared by the diskless workstations; allocating a rewrite redirection table to an extension block of each SSD partition on an HDD, and allocating a private data area to each diskless workstation; allocating a cache area to each rewrite extension block in amain memory; and after a server is initialized, performing data reading-writing when the server receives an I/O request for a hybrid disk by the workstation every time the diskless workstation is started and operated. By adopting the method disclosed by the invention, the speed of starting the operating system and running the application programs by the workless workstations can be increased, andthe service life of a storage medium can be prolonged.

Description

technical field [0001] The invention relates to an optimal organization and distribution method of system data of a diskless workstation on a server hybrid disk, in particular to a diskless network server data distribution method based on SSD and HDD hybrid storage. Background technique [0002] Since the diskless network workstation has no local disk, its startup process obtains the login parameters for establishing a session and connection with the storage server from the DHCP service through the extended ROM BIOS (such as PXE, iSCSI BIOS), and the I / O request of the diskless workstation is redirected to storage server. There are two components running on the storage server, the SAN target (Target) and the volume manager. The volume manager manages various storage devices in a unified manner, virtualizes a single disk device into a logical storage pool, and deploys logical storage volumes on demand. Assist in the mapping of logical storage volumes to local SCSI hard disks...

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Application Information

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IPC IPC(8): H04L29/08G06F3/06
Inventor 谭怀亮吴帆
Owner HUNAN UNIV
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