Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)
ÇѱÛÁ¦¸ñ(Korean Title) |
TLC ³½µå Ç÷¡½Ã ±â¹Ý ½ºÅ丮Áö¸¦ À§ÇÑ È¿À²ÀûÀÎ SLC ¹öÆÛ °ü¸® ±â¹ý |
¿µ¹®Á¦¸ñ(English Title) |
An Efficient SLC-buffer Management Scheme for TLC NAND Flash-based Storage |
ÀúÀÚ(Author) |
±Ç±â·Ï
°µ¿Çö
¾ö¿µÀÍ
Kirock Kwon
Dong Hyun Kang
Young Ik Eom
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¿ø¹®¼ö·Ïó(Citation) |
VOL 45 NO. 07 PP. 0611 ~ 0617 (2018. 07) |
Çѱ۳»¿ë (Korean Abstract) |
ÃÖ±Ù, ½ºÅ丮ÁöÀÇ °¡°Ý °æÀï·Â Çâ»óÀ» À§ÇØ TLC ³½µåÀÇ ¼ö¿ä°¡ Å©°Ô Áõ°¡Çϰí ÀÖ´Ù. TLCÀÇ SLC/MLC ´ëºñ ³·Àº ¼º´ÉÀÇ ÇѰ踦 ±Øº¹Çϱâ À§ÇÏ¿©, SLC ¾²±â ¹öÆÛ¸¦ ä¿ëÇÑ TLC ³½µå ±â¹ÝÀÇ ½ºÅ丮Áö°¡ Á¦Á¶»çµé¿¡ ÀÇÇØ »ó¿ëȵǰí ÀÖ´Ù. º» ³í¹®¿¡¼´Â SLC ¾²±â ¹öÆÛ¸¦ ä¿ëÇÏ´Â TLC ³½µå ±â¹ÝÀÇ ½ºÅ丮Áö¿¡¼ ÆÄÀϽýºÅÛÀÇ Àú³Î¸µ Ư¼ºÀ» Ȱ¿ëÇÏ¿© ¼º´ÉÀ» Çâ»óÇÏ´Â ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾È ±â¹ýÀº ½ÇÁ¦ ½ºÅ丮Áö Ç÷§ÆûÀÎ OpenSSD¿¡ ±¸ÇöµÇ¾î ±âÁ¸ ±â¼úÀÇ ¼º´É°ú ºñ±³ÇÏ¿´À¸¸ç, ±âÁ¸ ±â¹ý ´ëºñ ÃÖ´ë 65%ÀÇ ½ºÅ丮Áö 󸮷® ¼º´É Çâ»óÀ» È®ÀÎÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In recent years, almost all consumer devices have adopted NAND flash storage as their main storage, and their performance and capacity requirements are getting higher. To meet these requirements, many researchers have focused on combined SLC-TLC storage consisting of high-speed SLC and high-density TLC. In this paper, we redesign the internal structure of the combined SLC-TLC storage to efficiently manage the SLC region inside the storage and propose a scheme that improves the performance of the storage by employing the I/O characteristics of file system journaling. We implemented our scheme on the real storage platform, the OpenSSD jasmine board, and compared it with the conventional techniques. Our evaluation results show that our technique improves the storage performance by up to 65%, compared with the conventional techniques.
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Ű¿öµå(Keyword) |
ÆÄÀϽýºÅÛ Àú³Î¸µ
³½µå Ç÷¡½Ã ½ºÅ丮Áö
SLC-TLC È¥ÇÕ ±¸Á¶
SLC ¹öÆÛ
TLC ³½µå
FTL
file system journaling
NAND flash storage
combined SLC-TLC storage
SLC buffer
TLC NAND
FTL
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