TWI384357B - System and method for testing bridge sas channels - Google Patents
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一種橋接SAS通道測試系統及其方法，特別有關於一種將熱插拔裝置橋接至SAS通道的測試系統及其方法。A bridged SAS channel test system and method therefor, and more particularly to a test system and method for bridging a hot plug device to a SAS channel.
SAS(Serial Attached SCSI)界面是新一代的SCSI(Small Computer Small Interface,SCSI)界面。SAS是並行SCSI界面(Parallel SCSI)之後所開發出的全新界面。因此SAS界面可以提供多點介接、並且資料可以6Gb/s速度雙向傳輸。此外，SAS界面透過縮小連接線的設計，而有減少系統內部空間的優點，而且SAS界面還可向下相容，例如SATA(Serial ATA)硬碟。The Serial Attached SCSI (SAS) interface is a new generation of SCSI (Small Computer Small Interface, SCSI) interface. SAS is a new interface developed after the parallel SCSI interface (Parallel SCSI). Therefore, the SAS interface can provide multi-point interface, and the data can be transmitted bidirectionally at 6 Gb/s speed. In addition, the SAS interface has the advantage of reducing the internal space of the system by reducing the design of the cable, and the SAS interface is also backward compatible, such as SATA (Serial ATA) hard disk.
SAS通道是利用低電壓差動信號(Low Voltage Difference Signal,LVDS)進行資料傳輸的，根據規範每對低電壓差動線路上可以採用1.5Gbps和3.0Gbps的資料傳輸速率。相較於其它界面，LVDS之優點包括(1)可用於低電壓電源供應之環境、(2)產生之訊號具低雜訊、(3)具有高抗雜訊能力、(4)強健之傳輸訊號能力、(5)易於整合入系統晶片中。SAS通道所使用的傳接收電壓分別TX為800~1600mV、RX為275~1600mV。每一個SAS的物理連接器界面最大可以提供四個物理鏈接(physical link)。換句話說，每一個物理鏈接就是一個SAS硬碟。在每一個物理鏈接中均包括兩對差分信號線(Tx ＋/－和Rx ＋/－，即四條傳輸電纜)。請參考「第1圖」所示，其係為習知SAS物理連接器界面所提供物理鏈 接示意圖。The SAS channel uses the Low Voltage Difference Signal (LVDS) for data transmission. According to the specification, the data transmission rate of 1.5 Gbps and 3.0 Gbps can be used on each pair of low voltage differential lines. Compared with other interfaces, the advantages of LVDS include (1) environment for low-voltage power supply, (2) low noise generated by signals, (3) high noise immunity, and (4) robust transmission signals. Capability, (5) easy to integrate into the system chip. The transmission and reception voltages used in the SAS channel are 800 to 1600 mV and RX is 275 to 1600 mV, respectively. Each SAS physical connector interface provides up to four physical links (physical links). In other words, each physical link is a SAS hard drive. Two pairs of differential signal lines (Tx +/- and Rx +/-, ie four transmission cables) are included in each physical link. Please refer to "Figure 1", which is the physical chain provided by the conventional SAS physical connector interface. Connected to the schematic.
「第1圖」中每一行所代表的是不同的物理鏈接，而每一列所代表的是不同的Tx與Rx組。舉例來說，當第一物理鏈接(請參考虛線範圍)與SAS物理連接器界面相連結，則第一物理鏈接會使用SAS物理連接器界面的Rx 0＋、Rx 0－、Tx 0＋與Tx 0－。若SAS物理連接器界面同時連接第一與第二物理鏈接的話，則第一物理鏈接則上述所示，而第二物理鏈接則使用Rx 1＋、Rx 1－、Tx 1＋與Tx 1－。若有其他物理鏈接連結於SAS物理連接器界面則依此類推。Each row in Figure 1 represents a different physical link, and each column represents a different set of Tx and Rx. For example, when the first physical link (see the dotted line range) is linked to the SAS physical connector interface, the first physical link uses the Rx 0+, Rx 0-, Tx 0+, and Tx 0- of the SAS physical connector interface. . If the SAS physical connector interface is connected to the first and second physical links at the same time, the first physical link is as described above, and the second physical link uses Rx 1+, Rx 1-, Tx 1+ and Tx 1-. If there are other physical links to the SAS physical connector interface, and so on.
請參考「第2圖」所示，其係為習知SAS通道之測試系統示意圖。習知的SAS通道測試方法是將SAS硬碟230連接到控制端210上，控制端210中的檢測程式對SAS硬碟230存取操作，通過對SAS硬碟230的讀寫來測試經過SAS接口221所對應之通道的該些測試信號是否完整。請參考「第3圖」所示，其係為習知SAS通道之檢測流程圖。首先，將測試用SAS硬碟安裝至SAS背板(步驟S310)。接下來，啟動系統的測試程式(步驟S320)。測試程式對SAS硬碟進行存取操作(步驟S330)。控制端接收SAS硬碟的存取測試報告(步驟S340)。Please refer to "Figure 2", which is a schematic diagram of the test system of the conventional SAS channel. The conventional SAS channel test method is to connect the SAS hard disk 230 to the control terminal 210. The detection program in the control terminal 210 accesses the SAS hard disk 230, and tests the SAS hard disk 230 to read and write through the SAS interface. Whether the test signals of the channel corresponding to 221 are complete. Please refer to "Figure 3" for the detection flow chart of the conventional SAS channel. First, the test SAS hard disk is mounted to the SAS backplane (step S310). Next, the test program of the system is started (step S320). The test program accesses the SAS hard disk (step S330). The control terminal receives the access test report of the SAS hard disk (step S340).
但由於SAS背板220中具有多達8~16個SAS接口221，所以安裝等量的SAS硬碟230就得耗費許多時間。更何況每一次安裝SAS硬碟230就得重新啟動控制端210，因此整體的測試時間就會被拉長。However, since there are as many as 8 to 16 SAS interfaces 221 in the SAS backplane 220, it takes a lot of time to install an equal amount of SAS hard disks 230. Moreover, each time the SAS hard disk 230 is installed, the control terminal 210 has to be restarted, so the overall test time is lengthened.
鑒於以上的問題，本發明的主要目的在於提供一種橋接SAS通道測試系統，應用於SAS背板所包括的複數組SAS接口，測試系統透過橋接SAS接口連結至複數個終端裝置，測試系統檢測存取於終端裝置的測試信號，待測系統根據測試信號用以檢測SAS接口是否異常。In view of the above problems, the main object of the present invention is to provide a bridged SAS channel test system, which is applied to a complex array SAS interface included in a SAS backplane, and the test system is connected to a plurality of terminal devices through a bridged SAS interface, and the test system detects access. The test signal of the terminal device is used to detect whether the SAS interface is abnormal according to the test signal.
為達上述目的，本發明所揭露之一種橋接SAS通道測試系統包括有：控制端、熱插拔橋接界面、背板、轉接板與終端裝置。控制端發送測試信號及檢測終端裝置所回傳的待測信號，控制端用以選擇SAS接口作為發送測試信號之傳送路徑；熱插拔橋接界面電性連接於控制端，熱插拔橋接界面用以接收及轉換控制端發送的測試信號；轉接板電性連接於熱插拔橋接界面與終端裝置，轉接板用以轉換熱插拔橋接界面對SAS通道之低電壓差動訊號，將低電壓差動訊號傳輸至終端裝置；控制端根據所接收到的回應訊號判斷終端裝置是否運作正常。To achieve the above objective, a bridged SAS channel test system disclosed by the present invention includes: a control end, a hot plug bridge interface, a backplane, an adapter board, and a terminal device. The control terminal sends the test signal and detects the signal to be tested returned by the terminal device, and the control terminal selects the SAS interface as the transmission path for transmitting the test signal; the hot-plug bridge interface is electrically connected to the control end, and the hot-plug bridge interface is used. Receiving and converting the test signal sent by the control terminal; the adapter board is electrically connected to the hot plug bridge interface and the terminal device, and the adapter board is used to convert the low voltage differential signal of the hot plugging bridge interface to the SAS channel, which will be low The voltage differential signal is transmitted to the terminal device; the control terminal determines whether the terminal device is functioning normally according to the received response signal.
從本發明的另一觀點，本發明提出一種橋接SAS通道測試方法，應用於一SAS背板所包括的複數對SAS接口，偵測所選擇的該對SAS通道於傳輸資料時是否正常運作。According to another aspect of the present invention, the present invention provides a method for testing a bridged SAS channel, which is applied to a plurality of SAS interfaces included in a SAS backplane, and detects whether the selected pair of SAS channels operate normally when transmitting data.
為達上述目的，本發明所揭露之一種橋接SAS通道測試方法包括有：提供一熱插拔橋接界面對SAS轉接板，用以連接一熱插拔橋接界面通道與該SAS背板；提供一終端裝置；由一控制端發送複數個測試信號將其傳送至該終端裝置；根據該些測試信號， 該終端裝置回覆複數個回覆信號至該控制端；接收該些回覆信號，該控制端根據該些回覆信號與該些測試信號用以判斷SAS通道是否正常運作；若是SAS通道發生異常時，則發送一警告信號用以通知使用者。To achieve the above objective, a method for testing a bridged SAS channel disclosed in the present invention includes: providing a hot-swappable bridge interface to a SAS adapter board for connecting a hot-plug bridge interface channel and the SAS backplane; a terminal device; transmitting, by a control terminal, a plurality of test signals to the terminal device; according to the test signals, The terminal device replies with a plurality of reply signals to the control terminal; receiving the reply signals, the control terminal is configured to determine whether the SAS channel is normally operated according to the reply signals and the test signals; and if the SAS channel is abnormal, send A warning signal is used to inform the user.
本發明提供了一種對SAS通道的橋接系統，用以將熱插拔橋接界面橋接至SAS裝置。這樣一來，控制端可以藉由熱插拔橋接界面用以連接具有SAS界面的終端裝置，對不具有SAS界面的控制端提供相應解決方案。The present invention provides a bridging system for a SAS channel for bridging a hot plug bridge interface to a SAS device. In this way, the control terminal can connect the terminal device with the SAS interface through the hot plugging bridge interface, and provide a corresponding solution for the control terminal without the SAS interface.
有關本發明的特徵與實作，茲配合圖示作最佳實施例詳細說明如下。The features and implementations of the present invention are described in detail below with reference to the preferred embodiments.
請參考「第4圖」所示，其係為本發明之架構示意圖。本發明所揭露的測試系統400至少包括有：控制端410、熱插拔橋接界面420、轉接板430、背板440與終端裝置450。控制端410用以發送測試信號、檢測終端裝置450所回傳的待測信號及選擇SAS接口的其中之作為發送測試信號之傳送路徑。控制端410可以是但不限定為個人電腦、筆記型電腦或伺服器之任一。Please refer to "Figure 4" for a schematic diagram of the architecture of the present invention. The test system 400 disclosed in the present invention includes at least a control terminal 410, a hot plug bridge interface 420, an interposer 430, a backplane 440, and a terminal device 450. The control terminal 410 is configured to transmit a test signal, detect a signal to be tested returned by the terminal device 450, and select a transmission path of the SAS interface as a transmission test signal. The control terminal 410 can be, but is not limited to, any of a personal computer, a notebook computer, or a server.
熱插拔橋接界面420電性連接於控制端410，熱插拔橋接界面420用以接收及轉換控制端410發送的測試信號。在本發明中所述的熱插拔橋接界面(USB hub)420係為通用序列匯流排(Universal Serial Bus，USB)。熱插拔橋接界面420中更包括至少一橋接接口。橋接接口分別用以連接轉接板430，橋接接口的數量係根據轉接板 430中的低電壓差分信號(low voltage differential signaling，簡稱LVDS)線之數量所決定。The hot plug bridge interface 420 is electrically connected to the control end 410, and the hot plug bridge interface 420 is configured to receive and convert the test signal sent by the control end 410. The hot plug bridge interface (USB hub) 420 described in the present invention is a Universal Serial Bus (USB). The hot plug bridge interface 420 further includes at least one bridge interface. The bridge interfaces are respectively connected to the adapter board 430, and the number of the bridge interfaces is determined according to the adapter board. The number of low voltage differential signaling (LVDS) lines in 430 is determined.
轉接板(USB to SATA converter)430電性連接於熱插拔橋接界面420與終端裝置450之間，轉接板430用以轉換熱插拔橋接界面420對SAS通道之低電壓差動訊號，將低電壓差動訊號傳輸至終端裝置450。轉接板430中更包括有至少一通用序列匯流排集線器431與訊號轉換單元432，通用序列匯流排集線器431係電性連接於熱插拔橋接界面420與訊號轉換單元432之間。在本實施態樣中訊號轉換單元432係為GLB830。背板440連結於該轉接板430，背板440係用以固定終端裝置450。在本發明的實施態樣中的終端裝置450係以具有SAS界面的周邊裝置為例作一說明。The adapter board (430) is electrically connected between the hot plug bridge interface 420 and the terminal device 450, and the interposer board 430 is configured to convert the low voltage differential signal of the hot plug interface 420 to the SAS channel. The low voltage differential signal is transmitted to the terminal device 450. The adapter board 430 further includes at least one universal serial bus hub 431 and a signal conversion unit 432. The universal serial bus hub 431 is electrically connected between the hot plug bridge interface 420 and the signal conversion unit 432. In the present embodiment, the signal conversion unit 432 is a GLB 830. The backplane 440 is coupled to the adapter plate 430, and the backplane 440 is used to secure the terminal device 450. The terminal device 450 in the embodiment of the present invention is described by taking a peripheral device having a SAS interface as an example.
請參考「第5圖」所示，其係為本發明之運作流程示意圖。提供熱插拔橋接界面420對SAS轉接板(步驟S510)，用以連接熱插拔橋接界面420通道與SAS背板440。提供終端裝置(步驟S520)。由控制端發送複數個測試信號將其傳送至終端裝置(步驟S530)。終端裝置根據測試信號回覆複數個回覆信號至控制端(步驟S540)。控制端接收回覆信號(步驟S550)，並且控制端410根據回覆信號與測試信號用以判斷SAS通道是否正常運作。若是SAS通道發生異常時，則發送警告信號用以通知使用者(步驟S560)。其中，警告信號可以透過聲音、畫面等方式通知測試人員SAS通道發生異常。Please refer to "Figure 5" for a schematic diagram of the operational flow of the present invention. A hot plug bridge interface 420 is provided to the SAS adapter board (step S510) for connecting the hot plug bridge interface 420 channel to the SAS backplane 440. A terminal device is provided (step S520). The plurality of test signals are transmitted by the control terminal to be transmitted to the terminal device (step S530). The terminal device replies a plurality of reply signals to the control end according to the test signal (step S540). The control terminal receives the reply signal (step S550), and the control terminal 410 determines whether the SAS channel is operating normally according to the reply signal and the test signal. If an abnormality occurs in the SAS channel, a warning signal is sent to notify the user (step S560). Among them, the warning signal can notify the tester that the SAS channel is abnormal through sound, screen, and the like.
本發明提供了一種對SAS通道的測試系統400，用以將熱插 拔橋接界面420橋接至SAS裝置。這樣一來，控制端410可以藉由熱插拔橋接界面420用以連接具有SAS界面的終端裝置450，對不具有SAS界面的控制端410提供相應解決方案。而且，本發明除了可以測試經過SAS通道的測試信號是否完整，更不需關閉控制端電源或重啟系統就可以更換欲待測設備。如此一來，使得測試SAS通道的整體時間縮短。The present invention provides a test system 400 for a SAS channel for hot plugging The bridge interface 420 is bridged to the SAS device. In this way, the control terminal 410 can be connected to the terminal device 450 having the SAS interface through the hot plug bridge interface 420 to provide a corresponding solution to the control terminal 410 without the SAS interface. Moreover, the present invention can test whether the test signal passing through the SAS channel is complete, and the device to be tested can be replaced without turning off the power of the control terminal or restarting the system. As a result, the overall time for testing the SAS channel is shortened.
雖然本發明以前述之較佳實施例揭露如上，然其並非用以限定本發明，任何熟習相像技藝者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，因此本發明之專利保護範圍須視本說明書所附之申請專利範圍所界定者為準。While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The patent protection scope of the invention is subject to the definition of the scope of the patent application attached to the specification.
210‧‧‧控制端210‧‧‧Control end
220‧‧‧SAS背板220‧‧‧SAS backplane
221‧‧‧SAS接口221‧‧‧SAS interface
230‧‧‧SAS硬碟230‧‧‧SAS hard disk
400‧‧‧測試系統400‧‧‧Test system
410‧‧‧控制端410‧‧‧Control terminal
420‧‧‧熱插拔橋接界面420‧‧‧Hot-plug bridge interface
430‧‧‧轉接板430‧‧‧Adapter plate
431‧‧‧通用序列匯流排集線器431‧‧‧Universal Serial Bus Hub
432‧‧‧訊號轉換單元432‧‧‧Signal conversion unit
440‧‧‧背板440‧‧‧ Backboard
450‧‧‧終端裝置450‧‧‧ Terminals
第1圖係為習知SAS物理連接器界面所提供物理鏈接示意圖。Figure 1 is a schematic diagram of the physical links provided by the conventional SAS physical connector interface.
第2圖係為習知SAS通道之測試系統示意圖。Figure 2 is a schematic diagram of a test system for a conventional SAS channel.
第3圖係為習知SAS通道之檢測流程圖。Figure 3 is a flow chart of the detection of a conventional SAS channel.
第4圖係為本發明之架構示意圖。Figure 4 is a schematic diagram of the architecture of the present invention.
第5圖係為本發明之運作流程示意圖。Figure 5 is a schematic diagram of the operational flow of the present invention.
400‧‧‧測試系統400‧‧‧Test system
410‧‧‧控制端410‧‧‧Control terminal
420‧‧‧熱插拔橋接界面420‧‧‧Hot-plug bridge interface
430‧‧‧轉接板430‧‧‧Adapter plate
431‧‧‧通用序列匯流排集線器431‧‧‧Universal Serial Bus Hub
432‧‧‧訊號轉換單元432‧‧‧Signal conversion unit
440‧‧‧背板440‧‧‧ Backboard
450‧‧‧終端裝置450‧‧‧ Terminals
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| TW200601055A (en) * | 2004-06-24 | 2006-01-01 | Dell Products Lp | System and method of scsi and sas hardware validation |
| US20060259728A1 (en) * | 2005-05-11 | 2006-11-16 | Sashikanth Chandrasekaran | Storing information on storage devices having different performance capabilities within a storage system |
| US20070083705A1 (en) * | 2005-10-07 | 2007-04-12 | Hitachi Global Storage Technologies Netherlands B.V. | Functional test method and functional test apparatus for data storage devices |
| US7210065B2 (en) * | 2004-03-11 | 2007-04-24 | Lsi Logic Corporation | Methods and structure for testing responses from SAS device controllers or expanders |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7210065B2 (en) * | 2004-03-11 | 2007-04-24 | Lsi Logic Corporation | Methods and structure for testing responses from SAS device controllers or expanders |
| TW200601055A (en) * | 2004-06-24 | 2006-01-01 | Dell Products Lp | System and method of scsi and sas hardware validation |
| US20060259728A1 (en) * | 2005-05-11 | 2006-11-16 | Sashikanth Chandrasekaran | Storing information on storage devices having different performance capabilities within a storage system |
| US20070083705A1 (en) * | 2005-10-07 | 2007-04-12 | Hitachi Global Storage Technologies Netherlands B.V. | Functional test method and functional test apparatus for data storage devices |
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