Raid10 Wizard setup vs. Manual (or hardware).

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sactobob

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I'm working on a server that ultimately will be used for critical backups of VM images, but also have the ability to spin up a VM (temporarily) if needed. Currently I have 10x3tb nas drives and 2x512 Samsung SSD Pros, 2xquad 5620s and 72GB ECC DDR3. My initial thoughts is raid10 the nas drives with 5x5 and mirror the Samsung (only need 200GB for one datastore). The SSD speeds are of course crazy fast, but I don't seem to be getting performance that I would expect from a 5x3tb stripe either locally or over a 1gb dedicated port.

So to make sure, in a striped volume speed is not limited to 1 drive like ZFS correct? What's also different from what I was expecting is to see 2 volumes mirror (like my hardware raids), but when I use the wizard setup, I see 5 mirrored volumes, it appears the data is spread over all 5 as total space available reflects 5x3tb. Is this correct with the wizard setup? It also leads me to believe, unlike hardware raid10, that I can lose more then one mirror (of course as long as it's not the same mirrored pair) and still have a working datastore?

Here's a snippet of an iozone on a vm over iscsi:



Code:
                                                     random  random    bkwd   record   stride
              KB  reclen   write rewrite    read    reread    read   write    read  rewrite     read   fwrite frewrite   fread  freread
              64       4  232652  752329   998622  1336792 1119387  842003  735831   877797  1255511   821391   852702  821391  1124074
              64       8  293434 1163036  1304314  2298136 1780008 1279447  863676  1330167  1638743  1336792  1210227  831569  1492919
              64      16  323102 1304314  1599680  2133730 2067979 1768283 1124074  1638743  1991276  1780008  1526887 1138375  1828508
              64      32  438043 1304314  2203800  2772930 2467108 2006158 1330167  2444640  1879725  2379626  1562436 1183548  1933893
              64      64  500060 1518251  2772930  3057153 2892445 2203800 1392258  2298136  1492919  1734015  1828508  743988  1991276
             128       4  258508  748976  1015251  1440082 1175271  921183  766076   955616   992724   508012   477301  914904  1332828
             128       8  310724  976473  1526043  1911894 1206978 1471662 1229084  1598754  1852520   576161   631014 1266785  1772988
             128      16  325809 1024942  2035099  2905056 2464907 2066432 1409828  1618028  2464907  1162547  1254941 1373754  2004703
             128      32  576780 1346196  2409592  3380677 3124872 2660335 1710838  2784517  2784517  1561553  1421023 1406136  2558895
             128      64  511887 1217930  2132084  4012317 3895854 1684006 1967960  2985839  2027414  1778862  1319723 1561553  2132084
             128     128  597981 1440082  3536566  3867787 3657016 1778862 1967960  1885042  2166499  1939522  1561553  976473  2453642
             256       4  309185  762164  1208072  1463250  880256  962301  910872  1019886  1103757   880256   844929 1052888  1274008
             256       8  385018 1027695  1718521  2187712 1632308 1652404 1376935  1802167  1855098  1185399  1108314 1471270  1924938
             256      16  536654 1286217  2152625  3823789 2783115 2131261 1752173  2486631  2975955  1400278  1376935 1506359  2228578
             256      32  797843 1534342  2812272  4132864 3770085 3454704 2065659  2719671  3557725  1375171  1497953 1437779  2582316
             256      64  820398 1579483  2747508  4132864 3756894 2458168 1752173  3410808  3511189  1778290  1523457 1497953  2539563
             256     128  794889 1642294  3275543  3935921 2152625 1729594 2228578   130343  3159869  1842366  1729594 1629830  2639446
             256     256  839644 1683493  4496299  4652146 4404088 2148318 2392442  2165650  2345409  2242541  1805197  927393  2699161
             512       4  331207  758612  1158418  1402845 1105920  872320 1049187  1030558  1032044   837942   760762  970041  1267097
             512       8  438011 1073309  1723770  2216629 1635797 1476130 1463057  1766304  1856390  1343179  1108203 1305615  1823291
             512      16  585176 1361920  2081286  3201349 2560168 2438090 2057359  3012719  2560168  1640796  1551867 2081286  2304647
             512      32  792486 1580419  2548017  4305250 3177664 3527371 2256220  3934520  4447925  1734911  1546280 1904125  2958758
             512      64  839580 1501940  2750343  4447925 3366987 2995907 2427068  3934520  4163357  1947291  1541840 1842059  2509312
             512     128  876951 1560891  3437042  5331314 3970896 2572435 2405320    91789  3628697  1931527  1882427 1854787  2875558
             512     256  915847 1695195  3201349  4871723 3762197 2152206 2314583   171185  3459188  2207515  1803387 1605228  2370799
             512     512  988345 1983258  5177083  5278892 5384786 2357784 2572435  2216629  2860238  2235086  1801873 1038532  2979282
            1024       4  374818  718005  1203474  1442326 1130312  844168  981750  1042770  1130312   817340   724179 1141730  1333507
            1024       8  531633 1000969  1646334  2353657 1882266  729344 1395464  1771262  1783768  1284839  1029029 1284839  1893052
            1024      16  591201 1220575  1969440  3355952 2789291 2509027 1848247  2867506  2348509  1630707  1389594 1617808  2321847
            1024      32  851195 1460969  2410457  4195100 3908759 3251778 2265510  4018473  3618930  1964935  1512415 1889720  2910252
            1024      64  942952 1307525  2448941  4488860 4379019 3271594 2260740  4079544  4634161  1599731  1590254 1786736  2867506
            1024     128 1054547 1572783  2586074  4146499 3140041 2694787 2565989    77929  4379019  1796451  1692394 1787480  2892612
            1024     256  976172 1689730  3181915  4972145 4570058 2852271 2813041   133476  4199201  1939207  1835608 1819280  2688041
            1024     512 1019987 1771993  3835457  5536137 5507740 2250080 2908281   190617  3984917  2220992  1878973 2598591  4574926
            1024    1024 1595571 2567523  7472033  8199542 8000971 3849207 4550690  3001782  4614246  3894582  2586074 1580306  4634161
            2048       4  524710 1233688  2083516  2793651 2060032 1004458 1814210  1830447  2068963  1042239   763562 1972971  2450202
            2048       8  909873 1571864  3136379  4502520 3452815 1504681 2772014  3536690  3663388  2144371  1708146 2649737  3671217
            2048      16 1026545 2066474  3784436  5611381 5020987 3908414 3396834  3194702  2569678  1652925  1445434 3012103  4130162
            2048      32 1386411 2301200  4741090  7425563 6523312 5754221 4552633  7189398  6603549  3683812  1659632 2406275  4796687
            2048      64 1588726 2546821  4643695  8498106 7286980 6649556 4178378  8634786  7782107  3663388  2531808 3555722  4994712
            2048     128 1670606 2589040  4983122  8357547 8059569 7262337 4562305    67956  4751580  1779262  2089598 3093459  5056455
            2048     256 1768638 1899669  4686767  7088541 7609754 5225638 3999400    88558  4656281  1899669  2079481 2805512  4312636
            2048     512 1784066 2455104  2913021  3089009 3329682 2734075 2258247   123388  4112366  1840251  1729468 1657071  2615847
            2048    1024 1113723 1788524  3465352  4120256 4213218 2303669 3234398   197702  3542524  2085540  1250207 1596106  2585923
            2048    2048  961939 1867050  3819776  4301837 3764533 1738569 2409650  1673209  2503765  1381950  1409617  915107  1802788
            4096       4  455979  714226  1139036  1171902  979423  757262  935172  1026533   935121   799852   916513 1888560  2354114
            4096       8  884657 1563255  1830994  2517637 3119752 2505155 2550529  3495533  3416292  1665070  1655602 2553562  3486312
            4096      16 1074157 1351276  3813675  5926533 5271829 1851716 2205712  2868663  3023131  1805024  2031724 3091124  4235870
            4096      32 1662974 2427973  4096486  6919538 6804432 5826043 4366128  7392988  6847827  3706707  2514321 3324403  4801789
            4096      64 1736251 2420789  4357270  7877762 7877762 6451792 4171080  8788530  6597984  3608605  2465960 3319264  5075585
            4096     128 1780148 2532855  4796426  8514134 8240513 7158858 4643451    67579  4751325  2972395  2529871 3212508  5026578
            4096     256 1842581 2634219  4367238  7572208 7502762 6420447 4108241   119201  7774379  2292236  2498960 3139133  4551192
            4096     512 1838440 2707279  4791076  8193352 8193352 5389246 4526013   128521  7099689  3618486  2162674 1706585  2268027
            4096    1024 1157064 1657040  3168077  3494822 3509816 2516162 2747545   145129  4442909  1629380  1776283 1639018  2152378
            4096    2048 1063057 1558009  3153539  3878244 3540193 1566962 2033889   209460  3531460  1631081  1471281 1575440  1748977
            4096    4096 1071411 1592526  2962145  2929815 2825261 1511406 2419425  1582697  2340643  1497051  1213198  673250  1304885
            8192       4  452174  602973  1129444  1147167  921078  691081 1063347  1073781   955105   660487   671471 1088063  1115184
            8192       8  588373  806381  1501224  1598439 1358962 1149931 1604410  1955612  1475755   938487   923157 1330493  1361924
            8192      16  684882 1330081  2214071  2229732 1829805 1606585 1886673  3012742  2020708  1383977  1325565 1734131  1880993
            8192      32  982020 1910062  4354953  5970616 6154564 4920620 4336814  7407022  6145757  2594008  1969738 3477070  4222755
            8192      64 1447347 2078150  4652131  7230880 7453619 5829805 2579403  8543361  5830794  3271793  1928826 2319283  2611357
            8192     128 1202238 2420244  3133924  3844314 3905045 3258451 2190498    66780  2398785  1597176  1509534 1657264  2129937
            8192     256 1175141 1591922  2455002  3273040 3328849 2971317 2559993   113266  3787530  2282007  1346025 2875338  3223903
            8192     512 1345604 2229153  2579210  3192451 3168897 2925775 3114889   120148  5527801  1880581  1527520 1891972  1942566
            8192    1024 1045455 1885328  2797840  2897891 3691893 2581147 2735254   129348  5204597  2023207  1367616 1983611  2175933
            8192    2048 1066416 1746648  2793064  2996191 2798752 2290831 2605614   149317  4059608  1236548  1460202 1835181  1909107
            8192    4096 1075900 1671859  2617325  3840876 2612350 1445337 2778833   218622  2836411  1610048  1287035  881905  1513657
            8192    8192 1089650 1566591  2238301  2263665 2297879 1545382 2241953  1479759  2285650  1663683  1427681  725795  1359876


....

Are these normal speeds? I plan on bonding 2x1gb ports for final install. The iozone locally yields faster speeds, but still not what I would expect of 5 stripes. So am I getting a stripe of 5 volumes that are mirrored with all data spread across (and pulled from) the stripes with Wizard or do I need to manually set this up? Thanks for any help!

-Bob

Code:
                                                           random  random    bkwd   record   stride
              KB  reclen   write rewrite    read    reread    read   write    read  rewrite     read   fwrite frewrite   fread  freread
              64       4  182882  429630  1210227  1679761 1204796  492717 1066042   500060  1310683   500060   444572  969761  1429325
              64       8  484710  901377  2052169  3057153 1947927  939223 1336792   942521  2379626   901377   842003 1638743  2379626
              64      16  673098 1363961  4564786  4564786 3363612 1599680 1780008  1526887  3203069  1722886  1204796 1780008  2923952
              64      32  720041 2379626  4564786  7100397 4564786 2467108 3022727  2561267  4274062  2689580  1518251 1562436  3588436
              64      64 1780008 2203800  7940539  7940539 5860307 2133730 2467108  2133730  3738358  1947927  2203800 1304314  3791156
             128       4  144327  455822  1406136  1455701 1243315  509943 1000121   506097  1217930   465304   465708 1185654  1451764
             128       8  392792  826202  2905056  2985839 2367096  969421 1539168   962469  2464907  1007629   836500 1663139  2367096
             128      16  531131 1291158  3053774  4407601 3560017 1642783 2166499  1658003  3380677  1471662  1598754 2066432  2985839
             128      32  927549 2714132  5325799  6406138 4934216 2248149 1967960  2660335  4934216  2511022  1802755 2066432  3785961
             128      64 1618028 2558895  6045455  8548124 6114306 2286447 3199360  2843510  5325799  2248149  2608629 2420455  4012317
             128     128 2286447 2969325  7082197  8548124 6727225 2558895 3297617  2727923  4407601  2727923  3053774 1278855  3982553
             256       4  222039  445202  1543163  1561112 1319408  498069 1148625   474098  1354356   517265   457143 1108314  1415041
             256       8  362651  907792  2783115  2812272 2392442  907792 1718521   898674  1985448   822913   812944 2102055  2371308
             256      16  891956 1224606  3823789  4332998 3197509 1639786 3159869  1543163  3545976  1579483  1639786 2692393  3078337
             256      32 1347557 2000242  5569035  6398720 5117791 2665657 3935921  2699161  5022044  2081678  2015259 2366082  3935921
             256      64 2223962 2665657  7314033  7735574 6554972 3705040 4572895  3499745  6398720  3009318  2726577 3326279  4332998
             256     128 2639446 3043436  7571923  7965107 7120034 3326279 4496299  3511189  5810112  3421677  3654598 2509882  4197489
             256     256 2872459 3499745  7735574  8024634 7314033 2783115 4332998  3410808  5569035  3511189  3823789 1266495  4197489
             512       4  296990  458785  1344020  1579257 1336492  474078 1086890   462440  1168504   433152   505908 1160923  1394645
             512       8  656561  971357  2830083  2796910 2317080  949875 1803387   915847  2402629   966113   819085 2216629  2337255
             512      16  884172 1347393  4061007  4228947 3768799 1689859 2474613  1667552  2708713  1267845  1747618 2891043  3046915
             512      32 1438555 2073249  5624545  6156675 5331314 2979282 3104171  2337255  5886650  2256220  3029721 3762197  3905895
             512      64 2039772 3064306  6395018  7871843 6909408 2975154 5278892  4375425  7410080  2815243  3064306 3304808  4532414
             512     128 2753870 3795443  5439343  8265729 7647578 5067142 4827914  4447925  8140399  3201349  3556580 3239989  4420457
             512     256 2910635 3684733  5639315  7758090 7435738 3158966 4494470  4228947  6018636  3634839  3788747 2811557  4237291
             512     512 3140488 4000485  8394979  8362289 7988981 3259661 5453155  3684733  5870558  3736016  3905895 1450212  4411377
            1024       4  367568  495165  1519371  1565332 1333507  480754 1098511   476487  1368780   511987   532556 1135391  1390944
            1024       8  593981  950044  2730767  2791104 2375790  950885 2142335   897438   903099   584126   794510 1572783  2265510
            1024      16  895194 1351126  3999762  4095102 3696803 1668074 3556008  1657133  3712781  1812371  1378445 2255990  3092561
            1024      32 1508167 2086145  3937426  6172653 5507740 2877110 3541348  2877110  4095102  2015654  2822283 2908281  4110780
            1024      64 1927891 3401130  6479979  8000971 4920874 3121783 5277632  4589593  8183918  2908281  3314514 3808251  4674510
            1024     128 3335105 3999762  6208343  8326715 7869040 3311958 5330028  5226256  8391792  3403826  3955557 3239514  4550690
            1024     256 3101494 3791442  6059442  7883484 7590887 4898425 5219904  4789183  7524394  3390391  4048778 3142339  4282950
            1024     512 3003881 3999762  6918376  8457895 8137402 3751699 5383475  4249053  6963241  3791442  4064103 2910252  4451639
            1024    1024 3469823 4095102  8750850  8822754 8610501 3863055 5682634  3643490  5958564  3631168  4321737 1528563  4531485
            2048       4  376754  471125  1561009  1559876 1310279  474849 1309280   487848  1331606   512012   473097 1333259  1390450
            2048       8  726494  859783  2547576  2805512 2370418  875558 2288326   941176  2409650  1014422  1007876 1870302  2384234
            2048      16 1044393 1822292  4104506  4330028 3757946 1756343 3657149  1692329  3702868  1843410  1705094 3051697  3112514
            2048      32 1503627 2135840  5949508  6110328 5535444 3024831 5475461  2968386  5251194  2905140  2102384 2832339  4112366
            2048      64 1858566 3470953  5816563  7318020 6802261 3084572 5293261  4321315  5119743  3287628  3472356 3567536  4666399
            2048     128 3102397 4188565  5475461  8190205 8029434 5535444 5916724  5868220  8987113  3744839  3938881 3715681  4552633
            2048     256 3606479 3924484  5264067  7874853 7670915 5095447 4889518  5503525  7589584  5044577  4031308 3351769  4303993
            2048     512 3102397 4130162  5738844  8464610 8292998 5567735 6167360  5264067  7616502  3612546  4376355 3246623  4469720
            2048    1024 3126106 4469720  7368238  8830061 8531869 3922692 6167360  4623699  7013303  3969827  4472047 2909075  4511980
            2048    2048 5147354 4432815  8574451  8866519 5104531 3112514 5447681  5689430  6518362  4215286  4347560 1511565  4472047
            4096       4  387660  460798  1531209  1588844 1311559  454965 1130492   486753  1303598   528516   472379 1351808  1415401
            4096       8  773700  944893  2146730  2830382 2318218  923956 2295912   926497  2294686   979925   845932 2250793  2412291
            4096      16 1102205 1801994  2927818  4231697 3706707 1658960 3686820  1672526  3489144  1836082  1722498 3068488  3162828
            4096      32 1527261 2146730  5689064  6225028 5549401 2830848 3605576  2888438  5218980  3029528  3091124 3189841  4167033
            4096      64 1953188 3737349  6500617  7939654 7476641 3325046 4922872  4768469  6758923  4226492  3471518 3531460  4735608
            4096     128 3167493 4032070  5319164  8548024 8142867 5483860 5006072  6160296  5139356  2952980  3972402 3919833  4666153
            4096     256 3059199 3697135  5179642  7906767 7642951 5204750 5818150  5519094  8013724  3857345  4200656 3214912  4274869
            4096     512 4934183 4153935  6735075  8501494 8292220 4054910 5198450  5397712  7969117  3673419  4104315 3537277  4447510
            4096    1024 3838385 4476482  7392988  8770583 8655693 4248440 6389405  5367357  8013724  4214051  3599532 3319264  4516494
            4096    2048 3778448 4003879  6361016  8752710 8660056 5818150 6379914  5044289  6724530  4352854  4145915 2936325  4226492
            4096    4096 3640724 4214051  6872481  8480511 8256354 5603704 5936773  4027344  6158088  4063542  4505833  946820  2934319
 
Last edited:

Mirfster

Doesn't know what he's talking about
Joined
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Messages
3,215
Code tags hint:
index.php


Great when posting tons of output. ;)
 
Last edited:

Sakuru

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Sakuru

Guru
Joined
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Since this box will primarily be for backups I would recommend RAIDZ2. If you need performance then keep your current configuration of 5 2 disk mirror VDEVs.
 

sactobob

Dabbler
Joined
May 12, 2015
Messages
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Yes, I'm not really concerned about the loss of disk space, I have 3TB of VMs (over 4x512 samsung Pros using hardware raid 10 per host, and those are probably about 30% used), so this will be fine for image replications. But if I lose a Host or file system a VM is on, I want to have the ability to use this as an working iscsi box to live VMs, albeit temporarily. If I need a VM with speed I'll put it on the SSD too.

@Mirfster Thanks for the tip!
 

sactobob

Dabbler
Joined
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Messages
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The few questions above then. Using the wizard to setup raid10 5x2 mirrors that appear striped is the correct method? Is data spread over all 5 and so your speed isn't 1 drive max like zfs? And is it possible to lose multiple mirrors on opposite stripes as long as they're not matching mirrors? IE, here's what my volume looks like:

freenas1.png

So for example, if I lost da6p2, da4p1, ada1p2, I'd have a severely degraded datastore but no data loss? Odds are this will (better) not happen, but I do recall one occasion my Telco facility lost AC and the customer colo area hit about 90 degrees room temp and all hell broke lose. I shut my stuff down, but even then lost a couple drives, thankfully on a RAID 6 with 4 spares so was still good, but sweating (literally!) while the spares were rebuilt. :)

I guess I could test this by pulling them out since it's not a live system and right now just getting banged for about a week of constant disk i/o.
 

Bidule0hm

Server Electronics Sorcerer
Joined
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Messages
3,710
Using the wizard to setup raid10 5x2 mirrors that appear striped is the correct method?

Sounds right ;)

Is data spread over all 5 and so your speed isn't 1 drive max like zfs?

It's still ZFS, just not RAID-Zx but striped mirrors. Yes the data is spreaded. The speed isn't limited to one drive's speed.

So for example, if I lost da6p2, da4p1, ada1p2, I'd have a severely degraded datastore but no data loss?

Yes.
 

sactobob

Dabbler
Joined
May 12, 2015
Messages
23
Great, exactly what I was hoping for, thanks for the reply biduleOhm.
 
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