銆�銆�SSD 鍜岄珮閫熺珐瀛樼‖鐩�(Cache Disk)鐨勬瘮杓�
銆�銆�SSD 鏈夊叐鍊�(g猫)鏈�閲嶈鐨勭壒榛�(di菐n)灏辨槸:楂橀�熷拰楂樺彲鐢ㄦ��.
銆�銆�棣栧厛,鐩墠澶у瀷鐢ㄦ埗鐨勬噳(y墨ng)鐢ㄤ富瑕佹槸鏁�(sh霉)鎿�(j霉)搴�(k霉)鍜屼俊鎭檿鐞�(Messaging),鍏舵噳(y墨ng)鐢ㄧ壒榛�(di菐n)灏辨槸:灏忓崁(q奴) 濉婃暩(sh霉)鎿�(j霉)鐨勯毃姗�(j墨)璁�瀵�,鑰岃⿻(p铆ng)鍍�(ji脿)閫欑ó鎳�(y墨ng)鐢ㄦ�ц兘鐨勬(bi膩o)婧�(zh菙n)灏辨槸 IOPS(姣忕 I/O 鐨勫偝杓告鏁�(sh霉)).
銆�銆�鍌崇当(t菕ng)纭洡蹇呴爤瑕佷笉鏂峰湴绉诲嫊(d貌ng)纾侀牠渚嗙⒑瀹氭暩(sh霉)鎿�(j霉)璁�瀵殑浣嶇疆,閫欐ǎ澶уぇ鐨勯檷浣庝簡鏁�(sh霉)鎿�(j霉)瀛樺彇鐨勯�� 搴�,鎵�浠�,寰堝鍏徃鎳�(y墨ng)鐢ㄤ簡 Cache Memory(楂橀�熺珐瀛�)鏂瑰紡渚嗗姞蹇‖鐩ょ殑璁�瀵�熷害,鑰岄�欓爡(xi脿ng) 鎶�琛�(sh霉)灏�(du矛)鎬ц兘鐨勬彁鍗囩▼搴﹀嵒瑕佸彇姹轰簬 hit Rate 鐨勯珮浣�. 瑕佸仛鍒扮殑 hit Rate(100%), 鏁�(sh霉)鎿�(j霉)鐨勮畝 瀵畬鍏ㄧ敱 Cache Memory 鎻愪緵,鑰屼笖蹇呴爤瑕佹槸 1:1 鐨勯厤缃�(1GB 鐨勭‖鐩ょ┖闁�,浣跨敤 1GB 鐨� Cache Memory) ,鑰岄�欐ǎ鐨勬柟寮忓氨绛夊悓浜庝娇鐢ㄤ簡 SSD 鐨勬柟寮�.鐒惰��,閫欏皪(du矛)澶у鏁�(sh霉)鐨勭鐩ら櫍鍒� 寤犲晢渚嗚瑳,閫欏皣鏄彟涓�闋�(xi脿ng)鏂扮殑鎶�琛�(sh霉).
銆�銆�SSD 鐨� IOPS 鍙互閬�(d谩)鍒� 2,000,000 娆�,鑰屽ぇ澶氭暩(sh霉)鐨勭鐩ら櫍鍒楃敘(ch菐n)鍝佷篃鍍呰兘閬�(d谩)鍒� 200,000 娆�, 鎵�浠ュ湪鏁堣兘涓�,SSD 鍙互骞姪鐢ㄦ埗椤憲鎻愰珮鏁�(sh霉)鎿�(j霉)搴�(k霉)鍜屼俊鎭檿鐞嗙殑鎬ц兘.
銆�銆�SSD 鑸囩郴绲�(t菕ng)鍏�(n猫i)瀛樼殑姣旇純
銆�銆�浠ユ晥鑳借�岃█,绯荤当(t菕ng)鍏�(n猫i)瀛樻槸鍙互鍜� SSD 鐩稿尮閰嶇殑鎳�(y墨ng)鐢�.鐒惰�屽湪楂樺彲鐢ㄦ�т笂,浠ュ強鏌愪簺鎯� 娉佷笅,浣跨敤绯荤当(t菕ng)鍏�(n猫i)瀛樹締妯℃摤纭洡,鍗绘渻(hu矛)鍑虹従(xi脿n)閬╁緱鍏跺弽鐨勬晥鏋�:
銆�銆�1.) 鏁�(sh霉)鎿�(j霉)涓熷け闅辨偅:SSD 鍏锋湁寮�(qi谩ng)澶х殑闆绘簮淇濊(h霉)瑁濈疆. (N+1)闆绘簮鍜岄浕姹犵殑鎳�(y墨ng)鐢�,鍗充娇瑷�(sh猫)鍌欏畬 鍏ㄥけ鍘讳簡澶栭儴闆绘簮,SSD 鍙娇鐢ㄨ嚜韬殑闆绘睜,灏� DRAM 涓婃墍鏈夌殑鏁�(sh霉)鎿�(j霉)瀵埌鑷付鐨勭洡闄ｄ腑, 鑰岀郴绲�(t菕ng)鍏�(n猫i)瀛樺湪閬囧埌绐佺劧鎺夐浕鐨勬儏娉佷笅,鎵�鏈夌殑鏁�(sh霉)鎿�(j霉)閮藉皣涓熷け.
銆�銆�2.) 鏈嶅嫏(w霉)鍣ㄧ郴绲�(t菕ng)鐨勫奖闊�:鍦ㄧ郴绲�(t菕ng)閬�(y霉n)琛屼腑,绯荤当(t菕ng)鍏�(n猫i)瀛樼殑浣跨敤褰遍熆钁楃郴绲�(t菕ng)鏈韩鐨勬�ц兘,鑰屽叾绌洪枔 鐨勮畩鍖栦篃鏄毃姗�(j墨)鐨�. 濡傛灉鍒囧壊閮ㄥ垎绌洪枔浣滅偤纭洡浣跨敤, 閭ｅ氨寰堟湁鍙兘閫犳垚绯荤当(t菕ng)鏁撮珨鎬ц兘鐨勯檷 浣�.
銆�銆�3.) 鍙伔绉绘��:SSD 浣滅偤涓�鍊�(g猫)鐛�(d煤)绔嬬殑瑷�(sh猫)鍌�,鍙柟渚跨殑鍦ㄤ笉鍚岀殑绯荤当(t菕ng)涓绘(j墨)涓婁娇鐢�,閫欐ǎ鎻愰珮浜� 浣跨敤鐨勬柟渚挎��.閫欎篃鏄湇鍕�(w霉)鍣ㄧ殑绯荤当(t菕ng)鍏�(n猫i)瀛樼劇娉曢仈(d谩)鍒扮殑鍔熻兘.
