with the advent of solid-state hard drives, DIY loaders now typically opt for an SSD to join to solve the problem of computer bottlenecks and experience the speed and fluency of high-speed switch machines. However, the current solid-state hard disk mainly has a small capacity, the price is not cheap characteristics. On the market, currently hot-selling SSD solid-state h
A Hitachi hard drive, 2.5-inch, 500g capacity, some bad way, using Diskgenius repair Bad road two days and two nights failed.Last resort, use low-level format method.Note: Low-level formatting should not be used casually, this is the kill 1000 self-inflicted 800 scheme.See Baidu's interpretation of low-level formatting.The entire process is carried out in 3 phase
for IBM and Hitachi hard drive users are lucky, Hitachi's DFT and IBM DDD-SI software on the system information area error still has a relatively high success rate of repair. These two software are really hard drive maintenance software released by
of the ordinary hard disk.
Mobile hard drive which brand is good
The technical threshold of mobile hard disk is relatively high, but at present the technology is quite mature. Most mobile hard drives on the market can be guaranteed for more than 3 years (data loss is not
. Characters printed from the hard drive label can give us some useful information, such as "Barracuda" on behalf of the Cool Fish series, "7200.10" refers to Seagate 7200 turn tenth generation products, a single disc capacity of 250GB, If you change to 7200.9 or 7200.11, it means the Nineth and 11th generation products of the Seagate Cool Fish, with a capacity of 250GB. GBytes.Second, HitachiSince
Drive Division plan, 9.2003.
10.2005 Hitachi and Seagate have announced the beginning of a massive use of disk vertical write technology (perpendicular recording), which will change the magnetic field parallel to the disc to a vertical (90 degree) and make fuller use of the storage space.
11.2005 year December 21, HDD maker Seagate announced the acquisition of Maxtor.
12.2007 years January,
higher than the mechanical hard drive, the current 120GB of solid-state hard drives, the price is generally more than 400 yuan, 256GB solid-state drives in more than 700 yuan, and 500G, 1TB mechanical hard disk price is below 400 yuan, in terms of price, Mechanical
The performance of a single disk 1TB HDD since its inception, to bring users a surprise, whether as the main disk, or as a HD hard disk, a single disk 1TB hard drive than the performance of the old hard
First, capacity
The size of the mobile hard disk capacity is the first choice for many people, usually in GB or TB units, the current market mainstream mobile hard disk capacity has 320GB, 500GB, 1TB, 2TB and so on. The size of the capacity is directly related to the user's storage needs, the choice of mobile hard dis
high speed 2.0" hint, try to put some hundreds of trillion articles into the mobile hard drive, the speed is quite fast, so the problem is basically resolved. Originally, the main cause of the problem is due to some inferior chassis, in order to facilitate the use of users, although also provide a front USB interface, but these USB interface cable and the quality of the circuit board is rather poor, result
hard disk writing is not very stable, so the data of the test is very different. From the test, the Seagate's SATA3.0 2TB hard disk and SATA2.0 1TB hard disk in the file copy of similar results, can also be intuitive to see the advantages of SATA3.0 is not reflected.
Full Text summary
In fact, from the PATA to the
Test hard drive Bad Sectors in CentOS
Hard Disk status testing tools: smartctl, Badblocks, hdparm
You can quickly see whether the hard disk is healthy by using smartctl. The command is as follows:
[Root @ qy ~] # Yum installsmartmontools-y
Start SMART
# Smartctl -- smart = on -- offlineauto = on -- saveauto = on/dev/sd
choice of 64GB solid-state hard disk +500g or 1TB machinery to build a hybrid hard drive, which solid-state drives used to install systems and install software, mechanical hard disk as storage.
Solid-State hard disk
Introduction to Interfaces
IDE interface
(Integrated-drive-electronics) is now commonly used external interface, mainly connected to the hard disk and optical drive. Using 16-bit data parallel transmission mode, small size, fast data transmission. An IDE interface can only receive two external devices.
The IDE's English is all called "Integrated
Mobile hard drive believe that everyone will not be unfamiliar, similar to ordinary hard disk, only the mobile hard disk emphasis is portable mass storage products, so the mobile hard drive more than the use of USB or IEEE1394 fas
mode, in fact, the serial technology is faster than the transmission speed of parallel technology.
Easier cabling-the flat, wide line of SCSI cables will no longer be used.
Wider scalability-compatible with SATA.
Lower costs-with the advantage of simplifying the internal connectivity design, you can reduce design costs by sharing components.
Look at this picture, this is the image of the SAS hard drive. Th
Question: A new 1 TB hard drive (SATA type II, or second-generation serial port) is being purchased, ready to be hung under the red Flag Redflag Linux 6 system to store massive CCD images.
A summary of the steps
1. Connect the new hard drive
2. Configure a new hard
RAID information is usually kept in the last location of the hard disk, such as 1TB hard drive, can be cleared (999998000 is a general block location, it is not clear where the information of each RAID card is kept, can only guess the most normal situation).
DD obs=1000 seek=999998000 If=/dev/zero OF=/DEV/SDA
Thi
brand, type?
Seagate's MOMENTUSXT technology is currently the most popular, Toshiba and West, Samsung also have their own sshd products.
What are the advantages of sshd?
As we all know, the SSD speed is fast enough, but the capacity is small, the price is expensive; Although the speed of the HDD is general, but large capacity, cheap enough. The emergence of sshd is meant to balance the sharp relationship between price, capacity and performance.
HDD: Large capacity
SSD: High Speed
SSHD: Ca
Fault Description:A hospital in Beijing EMC FC AX-4 storage crashes, due to the failure of 2 hard drives in the RAID5 array, when only one hot spare is successfully activated, resulting in the RAID5 array paralysis, the upper LUN is not working properly, the entire storage space consists of 12 1TB stat of hard disk, Of these, 10 drives form a RAID5 array, and the
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