About the server configuration of 1T hard disk

I've found the configuration information for IBM System3500.

After a cursory look, there shouldn't be a compatibility issue. The problem may be with hard disk slots, data cables, jumpers, etc.

You have not set the correct boot order, and the new hard disk is booted (empty).All unbooted No display.

The hard disk configuration information for IBM System3500 is: Internal Hard Disk (STD Max) (GB)[4]:

0/ hot-swap sas, 4tb hot-swap sata

SATA hard drives do not need jumpers, and boot in sequence according to the interface order, SATA0, SATA1, SATA2, SATA3 in turn. The system disk must precede the slave disk. (In addition, due to the specification of the motherboard, the logo is only for reference, and the identification in the BIOS shall prevail.) )

SAS hard drives are the same as SATA hard drives, but can be defined within Bois.

The server hard disk is customized, it is recommended to call the IBM vendor.

It is not a simple matter to change hard disks in a server, and after a long period of contact with multiple server and storage array manufacturers, a common problem was found, which is hard disk customization. For example, the hard disk in the IBM array and the hard disk in the UIT array, although the capacity is the same, the interface is the same, but the interchange is unusable, ask the specific hard disk model will find that the hard disk model customized by different manufacturers has a lot of letters and numbers, which shows a problem, that is, the non-customized hard disk can not be used directly.

Not sure if mine can help you.

Under CentOS, it can raid0, the capacity is 2T, and the speed is twice that of a single disk. The disadvantage is that if any one piece is damaged, the data in both pieces will be ruined. This model is only suitable for the pursuit of speed, regardless of the purpose of data security.

Use: mdadm -c dev md0 -l 0 -n 2 dev sd[a,b].

After completion, the system has an extra disk, dev md0, which can be used by the system after formatting.

It is also possible to turn on the hard RAID settings on the motherboard, but when installing CentOS, it may be necessary to install the driver, which is also troublesome. It should be noted that if you use the motherboard hardware RAID0, when you install the system, you will see a 2T (RAID0 mode) disk.

If you are a soft raid, the system will be installed before the array is formed, so when you install the system, you will see two disks!

If you do RAID, the original system is gone and needs to be redone.

If it's just to expand the space, and you used LVM, you can use the new disk as a PV, distribute it to the original logical volume, and then expand the file system.

After opening raid0, you need to set it up yourself, and the data will be washed out.

Back up the data first and then study it slowly.

You can check if there is a problem with the connection of a hard drive. However, this is unlikely.

Most likely, your server uses RAID 1, so two 1T disks will still show 1T in the end. Generally, dual-disk servers start RAID 1 by default.

You can create a new one when you boot the computer. RAID 5 will reduce the size of a hard disk, and it can be partitioned when Linux 6 is installed. However, it can also be partitioned after installing the system.

An IPSAN with 16 bays and a 16-bay expansion cabinet can achieve 32 bays and install 2TB hard disks, which can be divided into multiple LANs and assigned to different servers. The investment of the disk array is about 4W, and the capacity and quantity of 2TB of hard disk on the disk can be calculated according to the demand. Also, is the data to be run big?

Through IPSAN, the network is used, and 50 servers are stored on one to consider the size of the data traffic.

Loss of two disks.

Each RAID 5 volume must have its own check disk.

I don't know if you've actually done raid with your hands. For example, like what the netizen "Fengtong Shigu" said, it may be what you mean. The scheme you are talking about is not like this:

8 disks are created to become a RAID5, and then this RAID5 is theoretically 7 TB, and you can divide those seven TBs again. There are two things that happen here.

1.Split under the operating system, divided into two zones (you may not be talking about this case).

2.Split under the array card, which needs to be supported by the array card. The professional name is to divide unit nuber.

Rigid translations are not appropriate enough. It can be understood as a logical repartition of a RAID5 volume. For example, if you want to divide two LUNs, one is 500GB, then the other is enough, and you can also divide multiple LUNs, just like a disk divides multiple zones.

It's just that the "disk" at this time is the entire riad5 volume, which is logically a large disk, but it is actually composed of 8 physical disks.

The two LUNs are stored inside a single RAID5 volume, not the two RAID5s you say, although they are recognized as two disks under the operating system. But they actually exist inside a raid5 volume. Of course, a RAID5 volume has only one check disk.

He ignores that no matter how many RAID you do, a set of RAID can only recognize 2T capacity.

2 cases:

1.8 hard disks, 4 are a set of RAID5, and the other 4 are a set of RAID5. In this case, you will lose 2 hard drives.

2.The 8 hard disks are made into RAID 5, and the RAID is divided into 2 virtual disks during the configuration process. In this way, there are 2 virtual disks under a RAID group, and both of them are RAID5, and only one hard disk is lost.

If you don't make a raid5, you will lose the capacity of a hard drive! You lose the capacity of two hard drives when you set up two RAID 5s!

Hope it helps!

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If you want to scale. You can make the newly purchased hard drive into RAID 0This will not affect the previous hard drive. When building a raid0, you must choose the right hard disk. Don't make the wrong choice.

1.Start - All Programs - HP System Tools HP Array Configuration Utility (ACU).

2.Select an array card in the ACU, for example, P410, and then select Create Array. Then check the two 1T hard disks you newly installed, and the created array should be Array B

3.Create a logical drive on Array B and select RAID 1

4.The above operations can be performed directly on Windows without affecting the original Array A

If you have any questions, you can contact me.

ACU solves this problem.

RAID 5, there is a hard disk capacity that holds the verification information.

The maximum number of motherboards is only 1TB

A021 Cherez's accounting idea is correct. Your server configuration is very misshapen, the CPU performance is too poor, the level of 2 5606 together is equal to one XEON E3-1230, the reason is that the 5606 clock speed is too low, and it does not support hyper-threading. There is also the SAS 1TB is 7200 rpm, it is better to buy SATA 1TB is also 7200 rpm, and what gives you this configuration is completely fooling people.

7200 rpm disk random read performance can not meet the query request of 200,000 daily visits, if it is running html pure static pages will be better, if it is running php, asp, jsp with database, there will definitely be a comparison card phenomenon.

I recommend you to take a look at this dual-socket six-core server of the domestic brand Zhengrui. It is equipped with a Xeon E5645 six-core twelve-thread processor (cache), Intel 5500 server chipset motherboard, 8G DDR3 reg ECC 1333MHz memory, SSD 256G high-performance solid state drive, and dual Gigabit network cards, and the performance can be said to be very good. If you feel that the performance is not enough as the business grows in the future, you can also expand to two processors to achieve 12 processing cores, 24 processing threads (you can see the grid of 24 processing cores in the task manager - very NB), and support up to 96GB memory.

Product model: I21S1-6594

Product type: Dual-socket quad-core rack server.

Processor: XEON E5645

Memory: 8G DDR3 reg ECC

Hard disk: SSD 256G

Mechanism: 1U rack type.

Price: 9990

Silver service. Three-year free door-to-door after-sales service nationwide, and more than three years free warranty for key components.

This configuration is a six-core Xeon, with hyper-threading technology, 1 CPU on top of your two 5606 CPUs, and the memory is upgraded to the 32GB DDR3 reg ECC you require, and the total price is more than 13,000.

What I recommend to you is the server products of the domestic brand Zhengrui, their products are very cost-effective, the workmanship is very professional, the compatibility, the quality and the like are guaranteed, the after-sales service is also very perfect, 3 years of free warranty, 3 years of free after-sales service, and the reputation in the industry is very good.

The configuration should be OK, how many megabytes of network cable do you use?? You can contact me for specific questions.