Dell R720 + H710p¿¡¼­ Fastpath°¡ µ¿ÀÛÇÏ´ÂÁö üũ

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미리 결론만 말하면
DELL PERC 710p (1G)는 cachecade만 가능하고 fastpath는 안됩니다.
fastpath가 없는 SSD raid는 앙꼬빠진 찐빵입니다.
 
==
 
누군가의 질문을 보고, 테스트 해보니 720/620의 PERC710p에 fastpath가 안되어 있다.
 
없다... 안된다. 진짜로?
 
# ./MegaCli64 -ELF -ControllerFeatures -a0              
This Feature is not supported
Exit Code: 0x01
 
체크해보니 Upgrade key가 안먹혀 있다.
fastpath 기능이 불가하다. cachecade만 가능하게 되어 있다.
 
/opt/MegaRAID/MegaCli/MegaCli64 -AdpAllInfo -aALL
...
Upgrade Key      : Absent
...
 
 
fastpath 정보 (LSI)
 
Optimum Controller settings for FastPath
Write Policy: Write Through
IO Policy: Direct IO
Read Policy: No Read Ahead
Stripe Size: 64KB
 
=== 아래와 같이 나와야 하는데... feature가 없다니...
 
참조.
 
# /opt/MegaRAID/MegaCli/MegaCli64 -ELF -ControllerFeatures -a0
                                  
Activated Advanced Software Options
---------------------------

Advanced Software Option          : MegaRAID FastPath
Time Remaining   : Unlimited

Advanced Software Option          : MegaRAID RAID6
Time Remaining   : Unlimited

Advanced Software Option          : MegaRAID RAID5
Time Remaining   : Unlimited

Re-host Information
--------------------
Needs Re-hosting : No
Exit Code: 0x00
- to be continue -
¹Ú¹®Çü 2013-08
     
ȸ¿øK 2013-08
cachecade´Â µ¿ÀÛÇÏ´Â °ÍÀ» PERC °ü¸®È­¸é¿¡¼­ º¼ ¼ö ÀÖ°í ¼³Á¤ÇÏ´Â °Íµµ °¡´ÉÇÕ´Ï´Ù.
±×·±µ¥ fastpath´Â È®ÀÎÀ» ¸øÇß½À´Ï´Ù.
IBM m5015¿¡ fastpath key¸¦ ´Þ¾Æº¸´Ï,
¼º´ÉÂ÷ÀÌ°¡ ÇöÀúÇѵ¥ 620/720ÀÇ 710p¿¡¼­ fastpath°¡ µ¿ÀÛÇÏ´ÂÁö ±Ã±ÝÇؼ­¿ä.
¼­·ù¿¡´Â ±âº» µ¿ÀÛÀ̶ó Çϴµ¥ È®ÀÎÀ» ÇÏ°í ½ÍÀº°Ô »ç¶÷ ¸¶À½À̶ó...

MegaRaid ¸í·ÉÀ¸·Î º¸´Ï... fastpath°¡ feature ÀÚü°¡ ¾ø½À´Ï´Ù...
°øÁöÈÆ 2013-08
ftp://ftp.dell.com/manuals/all-products/esuprt_ser_stor_net/esuprt_dell_adapters/poweredge-rc-h310_User's%20Guide_ko-kr.pdf

FastPath ´Â ³ôÀº ÃÊ´ç I/O(IOP)¸¦ Á¦°øÇÏ¿© ÀÀ¿ëÇÁ·Î±×·¥ ¼º´ÉÀ» Çâ»óÇÏ´Â ±â´ÉÀÔ´Ï´Ù. Dell PowerEdge RAID ÄÁÆ®
·Ñ·¯(PERC) H710P ¹× H810 Ä«µå¿¡¼­ FastPath ¸¦ Áö¿øÇÕ´Ï´Ù

¸Þ´º¾ó¿¡´Â µÈ´Ù°í ³ª¿ÍÀִµ¥ ¾ÈµÇ³ªº¸ÁÒ?
     
ȸ¿øK 2013-08
¸Þ´º¾ó¿¡´Â ºÐ¸íÈ÷ µÈ´Ù°í µÇ¾î Àִµ¥,
µ¿ÀÛÀ» ¾ÈÇÏ´Â °Í °°¾Æ¼­ (SSD raid ¼º´ÉÀÌ »ý°¢¸¸Å­ ¾È³ª¿É´Ï´Ù) ±Ã±ÝÇÏ°Ô »ý°¢ÇÏ°í üũ ÁßÀÔ´Ï´Ù.

fastpath´Â 1G cache¸¦ °¡Áø raid controller¿¡¼­¸¸ µÇ´Âµ¥, key °ªÀÌ °í°¡ÀÎ °ÍÀ¸·Î ¾Ë°í Àִµ¥
(PERC 710p ¼ÒºñÀÚ °¡°ÝÀÇ ¹ÝÀÌ ³Ñ½À´Ï´Ù) ¹«»óÀ¸·Î ³Ö¾úÀ»¸®´Â ¾ø´Â °Í °°´õ¶ó±¸¿ä.
±×·±µ¥ ÆÄ´Â ¿É¼Çµµ ¾ø´Ù°í ÇÏ°í.
fastpath¸¦ HP P410ó·³ ¾Æ¿¹ Áö¿øÀÌ ¾ÈµÇ°Ô ¸·¾Æ¹ö¸° °ÍÀÎÁö ±Ã±ÝÇؼ­¿ä.

HP P410Àº µ·³»°í advanced feature¸¦ ±¸¸ÅÇصµ raid 60¸¸ µÇÁö fastpath´Â ¾ÈµË´Ï´Ù.
Áö±ÝÀÌ µü ±×»óȲÀ̾î¿ä.
     
ȸ¿øK 2013-08
fastpathÀÇ È¿°ú°¡ ³¯ ¼ö ÀÖ´Ù´Â °ÍÀÌÁö fastpath°¡ µÈ´Ù´Â °ÍÀÌ ¾Æ´Õ´Ï´Ù.
fastpath ¾ÈµË´Ï´Ù.

±â´É ¹ÌÁö¿ø.


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