TWI354209B - Device for detecting redundant array of independen - Google Patents

Description

1354209 070478.TW 25450twf.doc/p IX. Description of the Invention: [Technical Field] The present invention relates to a device for detecting an independent disk backup array setting, and in particular, a type-specific disk A device that supports the setting state of the array control module. [Prior Art] Serial connection SCSI (Serial) in the server system architecture

Attached SCSI, SAS) high-speed storage hard disk interface standard. Please refer to the hard disk architecture diagram of the server shown in FIG. The way the motherboard transmits signals to the hard disk 105. The South Bridge/North Bridge 1〇3 is interconnected through peripheral components (peHpherai)

Component Interconnect, PCI) The computer bus 1〇7 transmits the signal to the SAS controller 1〇1, and the SAS controller 1〇1 transmits the SAS 1〇9 to the hard disk 105. Since domestic server manufacturers purchase SAS controllers from abroad, server manufacturers rely heavily on foreign component suppliers for SAS controllers. The main suppliers that currently offer SAS solutions are: One is the American company (LSI), and the other is Singapore's Broadcom. The hard disk 1〇5 shown in Figure 1 uses a Redundant Array of Independent Disks (RAID) to combine multiple hard disks into a single large-capacity hard disk through a SAS controller. Please refer to FIG. 2. FIG. 2 is a circuit diagram of a SAS controller manufactured by a foreign company. This connection method has many design inconveniences: the SAS controller is not allowed to be supported by the foreign company. The general purpose input/output (GPIO) management circuit 5 1354209 070478.TW 25450twf.doc/p ^01 reads the rajd setting mode of the SAS controller i〇i, so the Gpi〇 management circuit 201 cannot directly It is known that it is a hardware RAID mode or a software mode, and it takes a lot of effort to interpret the setting mode in design. In addition, when the server sets the hardware ^1 mode, the Gpi〇 management circuit 2G1's input (four) TG_丨 is also required. Sending the -Curry signal to the hardware enable terminal Ts_2 of the sas controller 101, and the hardware and software set terminal TS-1 of the SAS controller 101 must be coupled to the controller dedicated socket 2〇3

The second end of the PIN-2, the socket 203 must also cooperate with the socket-specific RAID key (not shown) to select the serial connection SCSI setting or the hardware setting. Insertion (or press-in) of the socket 艺 = will make the first end of the socket and the third end PIN_3 have a connection characteristic. For the use of foreign SAS controllers, the technical aspects have been stranded in the circuit design provided by foreign component suppliers. The prior art approach does not allow the motherboard to know if there is a RAID key plugged in, and from the BI〇s or substrate. It is difficult for the management controller to know whether it is the setting state of the hardware RAJD or the software, and the GPIO official circuit 201 must additionally send a signal to control the SAS controller 1〇1. SUMMARY OF THE INVENTION An object of the present invention is to provide a device capable of detecting a Redundant Array of Independent Disks (RAID) setting. When the R^UD key is plugged in, the device uses a level detecting circuit. In response to the change in the number level, it is known whether the RAID key is plugged in, thereby knowing whether the user is in the setting state of the hardware RAID or the software raid. The present invention provides a device capable of detecting an independent disk backup array (RAID) device, which is suitable for a serial attached SCSI (SAS) control module. The SAS control module includes a SAS control

A separate disk backup array and an independent disk backup array socket. The SAS controller has a soft hardware set end and a hard body enable end. The socket has a first end, a second end and a third end, the second end is coupled to the soft and hardware setting end of the SAS controller, the third end is coupled to a ground potential, wherein the RAID socket and the RAID The key is used to select the serial connection SCSI controller, the software/hardware setting, and when the RAID key is inserted into the rah) socket, the one end and the third end have the electrical potential of the ground potential. The device includes a first resistor, a level detecting circuit, and a general purpose input/output (GPIO) management circuit. The factory end of the first resistor is coupled to an operating voltage, and the other end is coupled to the first end. The level detecting circuit has a receiving end reduced to the first end and an output end coupled to the hardware enabling end of the SAS controller. This Gpi〇 management circuit is coupled

In one embodiment, the level detecting circuit includes a resistor and a transistor. The second resistor is connected to the second body to the first end, and the first source/display=the other end of the resistor, the second source/drain is lightly connected to the ground potential, and the medium-level side circuit The output end of the input terminal is the first source/drain and the second electric coupling. The level detecting circuit is a device for buffering the above, in an embodiment. 7 1354209

070478.TW 25450twf.d〇c/p w The above device, in one embodiment, the level detecting circuit is an inverter. In the above embodiment, if the RAID key is not inserted into the socket, the output terminal outputs a first signal, and if the key is inserted into the socket, the output terminal rotates a second signal, wherein the first signal causes the SAS controller Turn on the independent disk backup array function.

^ In the above embodiment, in an embodiment, the first signal is a logic 1 level and the second signal is a logic 0 level. In the above apparatus, in an embodiment, the GPIO management circuit knows that the RAID setting is one of the following by receiving the first signal or the second signal: a hardware RAU mode and a software rah mode.

The invention uses the signal level change reflected by the level detecting circuit to know whether the RAID key is inserted, so the device knows whether it is in the setting state of the hardware RAID or the software RAID, and the GPIO management circuit saves the use of the GPIO output. 'No need to send another signal to control the SAS controller. The above and other objects, features and advantages of the present invention will become more <RTIgt; <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; [Embodiment] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to refer to the same or. 8 1354209 070478.TW 25450twf.doc/p FIG. 3 is a circuit diagram of an apparatus for detecting a Redundant Array of Independent Disks (RAID) setting according to an exemplary embodiment of the present invention. The embodiment of FIG. 3 illustrates a device 300 capable of detecting RAID settings and a Serial Attached SCSI (SAS) control module 303. The device that can detect the RA ID setting 3 〇 The signal to be detected is from

SAS control module 303, so first introduce this SAS control module 303, SAS

The control module 303 includes a SAS controller ιοί, a separate disk backup array (RAID) key (not shown), and a socket 203 of the independent disk backup array. The SAS controller 101 has a hardware and software set terminal TS1 and a hardware enable terminal TS_2. The socket 203 has a first end pin-1, a second end pin-2 and a second end PIN-3, and the second end PIN-2 is coupled to the SAS controller 1〇1

The hardware and software setting terminal TS-1, the third terminal PIN_3 is coupled to the ground potential GND 'where the RAID socket 203 and the key are used to select the software/hardware setting of the sas controller 1〇1 when the RAID key is inserted into its exclusive The socket 2〇3 connects the first terminal PIN-1 with the third terminal PIN_3, so the first terminal PIN-1 and the second terminal pin-3 have the same electrical potential as the ground potential. The device 300 includes a first resistor iu, a level detecting circuit 3 (n and a general-purpose input/output (Gpi) management circuit 302. The circuit coupling manner of each component of the device 300 is as follows: - the end of the resistor R1 is secret to the operating voltage vcc, and the other end of the socket 203 is repeated! The level detecting circuit 3〇1 has an I^ connection to the first end PIN·b and has a wheel end _ The hardware enable terminal TS-2 of the controller 1〇1; the GPI0 management circuit 3〇2 is coupled to the output of the 9 1354209 070478.TW 25450twf.doc/p level detecting circuit 301.

For example, when the RAID key is inserted into the socket 203, the user sets the hardware RAID mode; when the raid key is not inserted into the socket 203, the user sets the software RAID mode. If the RAID key is not inserted into the socket 203, the input end of the level detecting circuit 3〇1 receives a detecting signal ΚΕγ_ρ, and the detecting signal ΚΕΥ-Ρ is a logic 1 level signal, and correspondingly, the level detecting circuit The output of 301 outputs a signal DET, which is a logic 1 level signal. In addition, if the RAID key is inserted into the socket 203, since the first key PIN-1 is connected to the third end pIN_3 when the RAID key is inserted into its exclusive socket 203, the first end PIN-1 and the third end PIN-3 are The electrical and ground potentials are the same. The input end of the level detecting circuit 3〇1 receives the detecting signal KEY-P, and the detecting signal ΚΕγ_ρ is a logical level signal. Correspondingly, the output of the level detecting circuit 301 outputs a signal DET. , this signal DET is a logical 〇 level signal.

Those skilled in the art should understand that the output signal of the level detecting circuit 3〇1 may be the same logic level of the detecting signal received by the corresponding input end, or may be the opposite logic level. The level detection circuit 301 can be implemented with a buffer when the same logic level is employed. When the opposite logic level is employed, the level detection circuit 3〇1 can be implemented with an inverter. In the following embodiments, the input/output relationship of the level detecting circuit 301 is the same logic level. Since the GPIO management circuit 302 is coupled to the output of the level detecting circuit 3〇1 1354209 070478.TW 25450twf.doc/p, the input terminal TG-2 of the GPIO management circuit 302 receives the signal DET, and the GPIO management circuit 302 According to the logic level of the signal DET, it is known whether the RAID key is inserted. If the signal DET is a logical level signal, the RAID key has been inserted. If the signal DET is a logic 1 level signal, the RAID key is not inserted. In addition, the signal DET is also transmitted to the hardware enable terminal TS-2 of the SAS controller 1〇1. If the user sets the hardware RAID mode, the signal DET will enable the SAS control.

The controller 101' turns on the RAID function. Therefore, the device 300 can inform the host board whether it is in the hardware RAID or software RAID setting state, and the GPIO management circuit 302 can save the use of a GpI0 output without additionally sending a signal to control the SAS controller 101.

4 is a circuit diagram of an apparatus for detecting a RAID setting according to another embodiment of the present invention. 4 is the same as the overall circuit architecture of FIG. 3, and the level detecting circuit 301 is explained in more detail in the apparatus 4() of this embodiment. The level detecting circuit 310 includes a second resistor R2 and a transistor MOS. The second resistor and one end of the second resistor are coupled to the operating voltage VC (&gt; the gate of the transistor MOS is connected to the first terminal, and the first source/pole D of the germanium crystal is connected to the second resistor R2^ At the other end, the transistor is coupled to the ground potential GND with the second source/drain s of the 〇3, wherein the input end of the level detecting circuit 301 is the gate of the gate G and the first end, and the level is The output end of the detective path 301 is the other end of the first source/no-pole D and the second resistor. Therefore, when the input of the level detecting circuit 3G1 receives the detection &quot;is ί虎KJEγ·ρ兔温绍_ / When the von logic level is 1 or 0, the output of the level detection circuit can respond accordingly and output - logic level 1 or 11 11 1354209 070478.TW 25450twf.doc / pk number DET. Then signal The DET will be transmitted to the Gpi〇 management circuit so? and the SAS controller 1 (n, so the device can let the motherboard know that it is in the hardware RAID softer slave (4), and the test management circuit 302 can save - GPI The use of the 〇 output does not require an additional signal to control the SAS controller 1〇1.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims. [Simple description of the diagram] Figure 1 is a hard disk architecture diagram of the server. 2 is a circuit diagram of a conventional sAS controller. 3 is a circuit diagram of an apparatus for detecting a stand-alone disk backup array (RAID) setting, in accordance with an exemplary embodiment of the present invention.

4 is a circuit diagram of a device capable of detecting a ^:: setting according to another embodiment of the present invention. [Main component symbol description] 101: SAS controller 103: Southbridge/Northbridge 105: Hard disk 107: PCI computer busbar 109: SAS signal 201, 302: GPIO management circuit 12 1354209 070478.TW 25450twf.doc/p 203 : RAID Sockets 300, 400: device 301 capable of detecting RAID setting: level detecting circuit D: first source/drain of the transistor DET: signal G: gate GND of the transistor: ground potential

KEY-P: Detection signal MOS: Transistor PIN-1: First end of the socket PIN-2: Second end of the socket PIN-3: Third end of the socket

Rl, R2: Resistor S: second source/drain of transistor TG-1: output of GPIO management circuit TG-2: input of GPIO management circuit

TS-1: Software and hardware setting terminal of SAS controller TS-2: Hardware-enabled terminal of SAS controller VCC: Operating voltage 13

Claims (1)

100-6-15 X. Application Patent Range: 1. A farmable device that can be used to test the independent disk backup array. The device is suitable for serially connected SCSI control modules. The serial connection SCSI control module includes : a serial-connected SCSI controller having a software-hardware set-end and a hardware-enabled end; a separate disk backup array key; and a _ A-A disk backup array socket having a first end, an ith end, a third end, the second end is reduced to the * column connection scsi control benefits of the recording hardware set end, the third end _ to - ground potential, 1 medium = and = Γ selection The contention is connected to the SCSI controller. Hard i=f. The __ the first end and the third end have an electrical potential of 3 hp. The device comprises: a voltage; a 阻 resistance, one end coupling of the first resistor Connected to the - working voltage, the other end of the first-resistance is connected to the first end; the electric and:: two-way: an input having an input coupled to the first end, and enabling _ The hardware signal, when the key is inserted into the seat, the ship's output terminal outputs a first-signal to connect the serial port to the scs_second backup array function. kJiejie opens the independent disk output management circuit, which is lightly connected to the output terminal. · When the socket is output, the output is output - the first 14 1354209 I (four) month is replaced by the purchase; 100-6-15 The input/output management circuit receives the first ^, or A - -5彳 to know that the independent disk backup array is set to the following disk independent disk backup array and the software-independent magnetic test The device of claim 1, wherein the level-resistance-first resistor has one end coupled to the operating voltage; and _:= two-r drives to the first end 'a first source/ The ground potential is the other end of the power, and a second source/no pole is lightly connected to the first end of the consumption: == the input end of the circuit is the other end of the interpole and the resistance = The wheel end is the first valve and the second battery. 3. As described in the patent application, the retest circuit is a buffer.贞The installation of 1 /, 4 4 position detection 4 · If the scope of the patent is the first circuit is an inverter. ^ The dry position detection is for the application of the device mentioned in Item 1. The towel is the logical one level and the second signal is the logical level. '5 15