|
SATA II and SAS RAID CARD ROUNDUP
Other Tests
RAID-3? WTF? Yeah, RAID-3 is an
obscure, little-known, lesser-used RAID level
somewhere in between RAID-0 and RAID-5 in terms of
functionality. RAID-3 is disk striping with
dedicated parity, whereas RAID-5 has distributed
parity. RAID-3 has the advantage of no
performance loss in the event the parity drive
failing, the array simply becomes RAID-0. The
disadvantage is that the parity drive itself becomes
a bottleneck because all data writes require the
parity to be recalculated and written as well.
Hmm, no wonder nobody uses it!
HD Tach RW v3.0.1.0, 8MB Zones: Hardware RAID-3
|
RAID CARD |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Areca ARC-1220 |
682.9 MB/s |
230.4 MB/s |
310.9 MB/s |
11.0 ms |
| Areca ARC-1261ML |
1065.9 MB/s |
373.1 MB/s |
WNR |
11.2 ms |
| Areca ARC-1680 |
1089.2 MB/s |
398.9 MB/s |
602.7 MB/s |
11.1 ms |
HD Tach RW v3.0.1.0, 32MB Zones: Hardware RAID-3
|
RAID CARD |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Areca ARC-1220 |
638.4 MB/s |
383.0 MB/s |
271.1 MB/s |
11.2 ms |
| Areca ARC-1261ML |
1000.7 MB/s |
523.4 MB/s |
WNR |
11.3 ms |
| Areca ARC-1680 |
1090.8 MB/s |
497.4 MB/s |
530.7 MB/s |
11.4 ms |
ATTO Disk Benchmark: Hardware RAID-3
Write Speed, KB/s
Read Speed, KB/s
|
Length |
RAID Card |
|
ARC-1220 |
ARC-1261ML |
ARC-1680 |
|
0.5 |
33229 |
31821 |
33682 |
|
32589 |
32717 |
34834 |
|
1.0 |
69156 |
63840 |
67108 |
|
70180 |
65632 |
69412 |
|
2.0 |
134021 |
125120 |
134217 |
|
139337 |
130437 |
138825 |
|
4.0 |
263118 |
249413 |
264142 |
|
267214 |
261070 |
269459 |
|
8.0 |
381583 |
517849 |
526237 |
|
484294 |
519897 |
528285 |
|
16.0 |
401452 |
1015021 |
1056768 |
|
712835 |
972881 |
989659 |
|
32.0 |
410845 |
318570 |
335544 |
|
777998 |
553451 |
561840 |
|
64.0 |
415277 |
352321 |
369098 |
|
807637 |
587202 |
595591 |
|
128.0 |
418384 |
368178 |
385875 |
|
815963 |
595591 |
602473 |
|
256.0 |
418384 |
360710 |
385875 |
|
813694 |
595591 |
603979 |
|
512.0 |
418384 |
369098 |
385875 |
|
813694 |
594105 |
610841 |
|
1024.0 |
420460 |
376545 |
394264 |
|
815963 |
594105 |
610841 |
Only the Areca
controllers support RAID-3. Results are
consistent with overall blistering Areca
performance. The ARC-1220 however outperforms
its two bigger brothers when dealt data 32k and
larger.
RAID-10 is a nested RAID
level, comprised of a stripe (RAID-0) of two or more
mirrored sets (RAID-1). In the tests below,
four mirrored sets for a total of eight drives are
striped, resulting in the RAID-10.
HD Tach RW v3.0.1.0, 8MB Zones: Hardware RAID-10,
Smallest stripe
|
RAID CARD |
STRIPE SIZE |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Adaptec ASR-31605 |
WNR |
WNR |
WNR |
WNR |
WNR |
| Areca ARC-1680 |
4k |
1086.7 MB/s |
257.6 MB/s |
615.3 MB/s |
12.5 ms |
| LSI MegaRAID 8708ELP |
8k |
266.0 MB/s |
185.6 MB/s |
73.3 MB/s |
10.7 ms |
| LSI MegaRAID 8888ELP |
8k |
261.2 MB/s |
185.2 MB/s |
73.1 MB/s |
10.8 ms |
| Promise EX16300 |
32k |
248.9 MB/s |
143.7 MB/s |
65.7 MB/s |
13.1 ms |
HD Tach RW v3.0.1.0, 32MB Zones: Hardware RAID-10,
Smallest stripe
|
RAID CARD |
STRIPE SIZE |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Adaptec ASR-31605 |
WNR |
WNR |
WNR |
WNR |
WNR |
| Areca ARC-1680 |
4k |
1087.5 MB/s |
289.6 MB/s |
303.6 MB/s |
12.4 ms |
| LSI MegaRAID 8708ELP |
8k |
258.7 MB/s |
186.0 MB/s |
59.0 MB/s |
11.0 ms |
| LSI MegaRAID 8888ELP |
8k |
258.3 MB/s |
185.7 MB/s |
62.6 MB/s |
11.0 ms |
| Promise EX16300 |
32k |
250.3 MB/s |
143.8 MB/s |
90.9 MB/s |
13.0 ms |
Not surprisingly, the
Areca card was best again, however the LSI had
markedly faster random access times.
ATTO Disk Benchmark: Hardware RAID-10, Smallest
Stripe
Write Speed, KB/s
Read Speed, KB/s
|
Length |
RAID Card
Stripe size |
ASR-31605
16k |
ARC-1680
4k |
8708ELP
8k |
8888ELP
8k |
EX16300
32k |
|
0.5 |
17289 |
33682 |
7495 |
3957 |
11687 |
|
24457 |
34962 |
14916 |
6590 |
11756 |
|
1.0 |
43115 |
67364 |
19145 |
7876 |
22153 |
|
47456 |
69924 |
31742 |
12391 |
22608 |
|
2.0 |
79905 |
135241 |
42647 |
15007 |
39911 |
|
53403 |
139849 |
61792 |
21842 |
43663 |
|
4.0 |
129925 |
265166 |
71027 |
18778 |
65235 |
|
93937 |
271507 |
118464 |
29403 |
75497 |
|
8.0 |
203374 |
530530 |
95653 |
16696 |
97444 |
|
131716 |
538918 |
175964 |
29261 |
114055 |
|
16.0 |
265583 |
1048379 |
130752 |
16765 |
55736 |
|
188645 |
1002340 |
200496 |
27157 |
105684 |
|
32.0 |
324525 |
335347 |
137262 |
18427 |
69401 |
|
238892 |
587005 |
259202 |
29390 |
172937 |
|
64.0 |
369098 |
369098 |
165292 |
17660 |
142250 |
|
258111 |
612368 |
278936 |
29177 |
261888 |
|
128.0 |
373749 |
394264 |
162098 |
18072 |
140153 |
|
298999 |
610841 |
285212 |
29177 |
96328 |
|
256.0 |
382055 |
384913 |
167353 |
17975 |
187318 |
|
301236 |
610841 |
285212 |
29369 |
101208 |
|
512.0 |
382055 |
393281 |
164080 |
18302 |
181375 |
|
328160 |
603979 |
286440 |
29177 |
107176 |
|
1024.0 |
374677 |
393281 |
173557 |
17660 |
189619 |
|
334707 |
603979 |
287140 |
29051 |
114856 |
Areca once again outruns
everybody else. Adaptec is close behind in
several tests, tying the ARC-1680 in 64k writes.
HD Tach RW v3.0.1.0, 8MB Zones: Hardware RAID-10,
Largest stripe
|
RAID CARD |
STRIPE SIZE |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Adaptec ASR-31605 |
WNR |
WNR |
WNR |
WNR |
WNR |
| Areca ARC-1680 |
128k |
1059.8 MB/s |
283.2 MB/s |
631.6 MB/s |
12.4 ms |
| LSI MegaRAID 8708ELP |
1024k |
253.3 MB/s |
163.8 MB/s |
134.2 MB/s |
10.9 ms |
| LSI MegaRAID 8888ELP |
1024k |
239.3 MB/s |
164.3 MB/s |
131.8 MB/s |
10.6 ms |
| Promise EX16300 |
128k |
211.3 MB/s |
117.8 MB/s |
52.5 MB/s |
12.9 ms |
HD Tach RW v3.0.1.0, 32MB Zones: Hardware RAID-10,
Largest stripe
|
RAID CARD |
STRIPE SIZE |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Adaptec ASR-31605 |
WNR |
WNR |
WNR |
WNR |
WNR |
| Areca ARC-1680 |
128k |
1107.1 MB/s |
288.5 MB/s |
313.9 MB/s |
12.5 ms |
| LSI MegaRAID 8708ELP |
1024k |
247.3 MB/s |
168.1 MB/s |
144.0 MB/s |
11.0 ms |
| LSI MegaRAID 8888ELP |
1024k |
257.6 MB/s |
168.7 MB/s |
140.9 MB/s |
10.6 ms |
| Promise EX16300 |
128k |
211.4 MB/s |
121.1 MB/s |
47.2 MB/s |
13.4 ms |
ARC-1680 still taking
the gold here, but LSI's 8888ELP once again shows
faster seek times. Promise on the other hand
falling far behind in that same department.
ATTO Disk Benchmark: Hardware RAID-10, Largest
Stripe
Write Speed, KB/s
Read Speed, KB/s
|
Length |
RAID Card
Stripe size |
ASR-31605
1024k |
ARC-1680
128k |
8708ELP
1024K |
8888ELP
1024K |
EX16300 |
|
0.5 |
22281 |
33682 |
5717 |
3958 |
11844 |
|
24140 |
34962 |
13985 |
6590 |
11844 |
|
1.0 |
43881 |
67364 |
11460 |
7603 |
22665 |
|
46945 |
69924 |
25869 |
12360 |
23177 |
|
2.0 |
78373 |
135241 |
23945 |
14785 |
42138 |
|
91337 |
139337 |
46551 |
21573 |
45924 |
|
4.0 |
138990 |
265166 |
48988 |
17199 |
70674 |
|
157138 |
271507 |
77545 |
29403 |
77984 |
|
8.0 |
208996 |
528528 |
89359 |
17552 |
104564 |
|
259202 |
534626 |
114908 |
29261 |
121536 |
|
16.0 |
267569 |
1061060 |
136944 |
17215 |
53203 |
|
345438 |
998047 |
146336 |
29188 |
111201 |
|
32.0 |
308283 |
342879 |
167772 |
18393 |
113006 |
|
486539 |
587005 |
178118 |
29069 |
182980 |
|
64.0 |
393281 |
369098 |
195462 |
17506 |
192937 |
|
594105 |
603979 |
188692 |
29177 |
268435 |
|
128.0 |
443487 |
385875 |
246120 |
17911 |
202623 |
|
652679 |
603979 |
214352 |
29369 |
274083 |
|
256.0 |
466265 |
385875 |
280307 |
17816 |
216480 |
|
749354 |
603979 |
230841 |
29051 |
288551 |
|
512.0 |
520672 |
385875 |
221508 |
18104 |
246120 |
|
845136 |
610841 |
321528 |
29241 |
287140 |
|
1024.0 |
527164 |
394264 |
242562 |
17476 |
211751 |
|
845136 |
610841 |
416308 |
28926 |
282388 |
Adaptec with a repeat
win over Areca in the larger data sets.
Impressive ARC-1680 numbers nonetheless.
RAID-30 is also a nested
RAID level. Here, two or more RAID-3s are
striped (RAID-0'd). If you think RAID-3 is
rarely used, just imagine how much less popular
RAID-30 is.
HD Tach RW v3.0.1.0, 8MB Zones: Hardware RAID-30
|
RAID CARD |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Areca ARC-1680 |
1091.3 MB/s |
387.9 MB/s |
577.9 MB/s |
11.3 ms |
HD Tach RW v3.0.1.0, 32MB Zones: Hardware RAID-30
|
RAID CARD |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Areca ARC-1680 |
996.5 MB/s |
447.8 MB/s |
527.8 MB/s |
11.4 ms |
ATTO Disk Benchmark: Hardware RAID-30
Write Speed, KB/s
Read Speed, KB/s
|
Length |
RAID Card |
|
ARC-1680 |
|
0.5 |
33357 |
|
34962 |
|
1.0 |
67364 |
|
69412 |
|
2.0 |
134021 |
|
138825 |
|
4.0 |
269459 |
|
271507 |
|
8.0 |
528285 |
|
545062 |
|
16.0 |
1065156 |
|
1002340 |
|
32.0 |
335347 |
|
578617 |
|
64.0 |
369098 |
|
612368 |
|
128.0 |
385875 |
|
610841 |
|
256.0 |
385875 |
|
603979 |
|
512.0 |
385875 |
|
603979 |
|
1024.0 |
394264 |
|
603979 |
Okay, so now you
probably can guess what RAID-50 is. Yes, it is
a stripe of two or more RAID-5s.
HD Tach RW v3.0.1.0, 8MB Zones: Hardware RAID-50,
Smallest stripe
|
RAID CARD |
STRIPE SIZE |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Adaptec ASR-31605 |
WNR |
WNR |
WNR |
WNR |
WNR |
| Areca ARC-1680 |
4k |
1031.0 MB/s |
374.7 MB/s |
570.2 MB/s |
11.5 ms |
| LSI MegaRAID 8708ELP |
8k |
349.2 MB/s |
210.0 MB/s |
6.9 MB/s |
11.4 ms |
| LSI MegaRAID 8888ELP |
8k |
259.1 MB/s |
65.8 MB/s |
28.7 MB/s |
11.4 ms |
| Promise EX16300 |
32k |
205.7 MB/s |
117.6 MB/s |
61.8 MB/s |
12.0 ms |
HD Tach RW v3.0.1.0, 32MB Zones: Hardware RAID-50,
Smallest stripe
|
RAID CARD |
STRIPE SIZE |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Adaptec ASR-31605 |
WNR |
WNR |
WNR |
WNR |
WNR |
| Areca ARC-1680 |
4k |
1061.9 MB/s |
440.3 MB/s |
525.1 MB/s |
11.5 ms |
| LSI MegaRAID 8708ELP |
8k |
322.2 MB/s |
218.0 MB/s |
7.0 MB/s |
11.8 ms |
| LSI MegaRAID 8888ELP |
8k |
343.7 MB/s |
218.5 MB/s |
6.8 MB/s |
11.5 ms |
| Promise EX16300 |
32k |
234.6 MB/s |
136.9 MB/s |
94.2 MB/s |
11.6 ms |
Areca champion yet
again. LSI suffering in writes especially in
the 32MB zone test.
ATTO Disk Benchmark: Hardware RAID-50, Smallest
stripe
Write Speed, KB/s
Read Speed, KB/s
|
Length |
RAID Card
Stripe size |
ASR-31605
16k |
ARC-1680
4k |
8708ELP
8k |
8888ELP
8k |
EX16300
32k |
|
0.5 |
22409 |
33682 |
4954 |
3801 |
9796 |
|
24523 |
34834 |
12740 |
6511 |
9899 |
|
1.0 |
34066 |
67364 |
6759 |
7857 |
19145 |
|
48087 |
69412 |
32589 |
11854 |
22750 |
|
2.0 |
80105 |
135241 |
8838 |
14785 |
36024 |
|
89518 |
138313 |
64702 |
22023 |
45188 |
|
4.0 |
128901 |
371507 |
9731 |
18501 |
61332 |
|
149400 |
371507 |
122254 |
28758 |
76968 |
|
8.0 |
197033 |
528285 |
20364 |
17036 |
96130 |
|
236338 |
545062 |
192741 |
29261 |
133686 |
|
16.0 |
264142 |
1069449 |
47185 |
17430 |
137968 |
|
330425 |
998047 |
272531 |
29261 |
100972 |
|
32.0 |
338656 |
335544 |
61670 |
18393 |
184883 |
|
439999 |
578617 |
324525 |
29197 |
165916 |
|
64.0 |
399655 |
369098 |
113195 |
18072 |
211751 |
|
510429 |
612368 |
348833 |
29051 |
261888 |
|
128.0 |
440194 |
393281 |
104355 |
17848 |
214352 |
|
536870 |
610841 |
368178 |
29177 |
296795 |
|
256.0 |
460222 |
385875 |
104355 |
17975 |
194049 |
|
556472 |
610841 |
385875 |
29177 |
359810 |
|
512.0 |
474591 |
385875 |
105364 |
18104 |
226391 |
|
591157 |
603979 |
366351 |
28926 |
436207 |
|
1024.0 |
478171 |
394264 |
90687 |
17629 |
205100 |
|
585738 |
603979 |
366351 |
29051 |
441286 |
Interesting results
here. Areca taking the lead up to 16k, but
then being slightly out-written by Adaptec in the
larger data sizes.
HD Tach RW v3.0.1.0, 8MB Zones: Hardware RAID-50,
Largest stripe
|
RAID CARD |
STRIPE SIZE |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Adaptec ASR-31605 |
WNR |
WNR |
WNR |
WNR |
WNR |
| Areca ARC-1680 |
128k |
1034.2 MB/s |
441.7 MB/s |
595.1 MB/s |
11.3 ms |
| LSI MegaRAID 8708ELP |
1024k |
245.7 MB/s |
65.1 MB/s |
28.0 MB/s |
11.1 ms |
| LSI MegaRAID 8888ELP |
1024k |
257.7 MB/s |
64.9 MB/s |
29.0 MB/s |
11.4 ms |
| Promise EX16300 |
128k |
205.6 MB/s |
117.5 MB/s |
71.7 MB/s |
12.0 ms |
HD Tach RW v3.0.1.0, 32MB Zones: Hardware RAID-50,
Largest stripe
|
RAID CARD |
STRIPE SIZE |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Adaptec ASR-31605 |
WNR |
WNR |
WNR |
WNR |
WNR |
| Areca ARC-1680 |
128k |
1078.8 MB/s |
421.7 MB/s |
536.3 MB/s |
11.4 ms |
| LSI MegaRAID 8708ELP |
1024k |
253.1 MB/s |
175.5 MB/s |
32.0 MB/s |
11.5 ms |
| LSI MegaRAID 8888ELP |
1024k |
253.4 MB/s |
175.0 MB/s |
32.4 MB/s |
11.4 ms |
| Promise EX16300 |
128k |
206.4 MB/s |
119.4 MB/s |
119.6 MB/s |
11.8 ms |
Same story here as with the smaller stripe size.
ATTO Disk Benchmark: Hardware RAID-50, Largest
stripe
Write Speed, KB/s
Read Speed, KB/s
|
Length |
RAID Card
Stripe size |
ASR-31605
1024k |
ARC-1680
128k |
8708ELP
1024k |
8888ELP
1024k |
EX16300
128k |
|
0.5 |
20873 |
33810 |
5234 |
3958 |
9796 |
|
24201 |
35090 |
10994 |
6384 |
9850 |
|
1.0 |
41746 |
67364 |
10333 |
7818 |
19145 |
|
47063 |
69412 |
19799 |
12180 |
19593 |
|
2.0 |
60768 |
134217 |
18267 |
15177 |
32736 |
|
91337 |
138313 |
36263 |
21520 |
43991 |
|
4.0 |
125632 |
268435 |
28548 |
17668 |
62194 |
|
158162 |
270483 |
60315 |
28758 |
80617 |
|
8.0 |
184549 |
528285 |
33554 |
16735 |
100412 |
|
259850 |
543014 |
91166 |
28829 |
131973 |
|
16.0 |
238977 |
1056768 |
36821 |
16970 |
143474 |
|
344583 |
1002340 |
116083 |
28001 |
94946 |
|
32.0 |
286948 |
335347 |
37107 |
18599 |
153622 |
|
460026 |
561840 |
135306 |
29006 |
170838 |
|
64.0 |
344568 |
369098 |
35469 |
17567 |
210728 |
|
556472 |
587202 |
176160 |
28556 |
266437 |
|
128.0 |
365444 |
384913 |
38216 |
17848 |
185964 |
|
649440 |
603979 |
224806 |
28556 |
301989 |
|
256.0 |
388438 |
385875 |
43296 |
18369 |
217559 |
|
716049 |
603979 |
288551 |
29051 |
363644 |
|
512.0 |
440194 |
385875 |
45140 |
17975 |
204507 |
|
890899 |
603979 |
365444 |
27846 |
429761 |
|
1024.0 |
527164 |
393281 |
42744 |
17660 |
226391 |
|
845136 |
603979 |
403972 |
28020 |
445193 |
Adaptec and Areca finish in front of the pack
here. Areca showing its prowess with data
sizes between 0.5k and 64k, while Adaptec takes over
between 256k and 1024k. 128k is split between
the two.
The final test is
RAID-60. Like RAID-50, 30 and 10, RAID-60 is a
stripe of two or more RAID-6s. This nested
RAID level will surely burden the RAID subsystem
with many parity and striping calculations.
HD Tach RW v3.0.1.0, 8MB Zones: Hardware RAID-60,
Smallest stripe
|
RAID CARD |
STRIPE SIZE |
BURST SPEED |
AVE. READ SPEED |
AVE. WRITE SPEED |
RANDOM ACCESS TIME |
| Adaptec ASR-31605 |
WNR |
WNR |
WNR |
WNR |
WNR |
| Areca ARC-1680 |
4k |
1051.3 MB/s |
247.9 MB/s |
571.9 MB/s |
12.2 ms |
| LSI MegaRAID 8708ELP |
8k |
368.5 MB/s |
| 
