{"id":1792,"date":"2017-10-08T21:56:51","date_gmt":"2017-10-09T03:56:51","guid":{"rendered":"http:\/\/bt.beerprojects.com\/wordpress\/?p=1792"},"modified":"2017-10-11T21:34:58","modified_gmt":"2017-10-12T03:34:58","slug":"external-hard-drive-test","status":"publish","type":"post","link":"https:\/\/bt.beerprojects.com\/wordpress\/?p=1792","title":{"rendered":"External hard drive test"},"content":{"rendered":"

I’ve been trying to sort out why my Plex media server hangs occasionally or takes a while to load content. One of my suspicions was the access time to the hard drive with the media. It was an external hard drive on a shared USB bus. I just recently moved it off of that to a dedicated USB 3.0 input and ran the CrystalDiskMark<\/a> program recommended by several sites including this one<\/a>.<\/p>\n

WD Speed Test<\/h3>\n

———————————————————————–
\nCrystalDiskMark 5.2.2 Shizuku Edition x64 (C) 2007-2017 hiyohiyo
\nCrystal Dew World : http:\/\/crystalmark.info\/
\n———————————————————————–
\n* MB\/s = 1,000,000 bytes\/s [SATA\/600 = 600,000,000 bytes\/s]
\n* KB = 1000 bytes, KiB = 1024 bytes<\/p>\n

Sequential Read (Q= 32,T= 1) : 139.284 MB\/s
\nSequential Write (Q= 32,T= 1) : 124.293 MB\/s
\nRandom Read 4KiB (Q= 32,T= 1) : 0.530 MB\/s [ 129.4 IOPS]
\nRandom Write 4KiB (Q= 32,T= 1) : 1.327 MB\/s [ 324.0 IOPS]
\nSequential Read (T= 1) : 134.639 MB\/s
\nSequential Write (T= 1) : 118.700 MB\/s
\nRandom Read 4KiB (Q= 1,T= 1) : 0.354 MB\/s [ 86.4 IOPS]
\nRandom Write 4KiB (Q= 1,T= 1) : 1.303 MB\/s [ 318.1 IOPS]<\/p>\n

Test : 1024 MiB [G: 29.9% (836.9\/2794.5 GiB)] (x5) [Interval=5 sec]
\nDate : 2017\/10\/08 21:29:44
\nOS : Windows 7 Home Premium SP1 [6.1 Build 7601] (x64)<\/p>\n

The sequential Read and Writes look pretty good, but the randoms are horrible.  I know sequential is the most important in my case, but still thats bad.<\/p>\n

To compare I ran the speed test on a Seagate Drive still on the USB bus and on my C drive which is a RAID 0 2 drive system.<\/p>\n

Seagate Speed Test<\/p>\n

———————————————————————–
\nCrystalDiskMark 5.2.2 Shizuku Edition x64 (C) 2007-2017 hiyohiyo
\nCrystal Dew World : http:\/\/crystalmark.info\/
\n———————————————————————–
\n* MB\/s = 1,000,000 bytes\/s [SATA\/600 = 600,000,000 bytes\/s]
\n* KB = 1000 bytes, KiB = 1024 bytes<\/p>\n

Sequential Read (Q= 32,T= 1) : 0.838 MB\/s
\nSequential Write (Q= 32,T= 1) : 0.812 MB\/s
\nRandom Read 4KiB (Q= 32,T= 1) : 0.275 MB\/s [ 67.1 IOPS]
\nRandom Write 4KiB (Q= 32,T= 1) : 0.387 MB\/s [ 94.5 IOPS]
\nSequential Read (T= 1) : 0.838 MB\/s
\nSequential Write (T= 1) : 0.629 MB\/s
\nRandom Read 4KiB (Q= 1,T= 1) : 0.211 MB\/s [ 51.5 IOPS]
\nRandom Write 4KiB (Q= 1,T= 1) : 0.382 MB\/s [ 93.3 IOPS]<\/p>\n

Test : 1024 MiB [F: 29.2% (816.9\/2794.5 GiB)] (x5) [Interval=5 sec]
\nDate : 2017\/10\/08 21:58:01
\nOS : Windows 7 Home Premium SP1 [6.1 Build 7601] (x64)<\/p>\n

C Drive Speed Test<\/p>\n

———————————————————————–
\nCrystalDiskMark 5.2.2 Shizuku Edition (C) 2007-2017 hiyohiyo
\nCrystal Dew World : http:\/\/crystalmark.info\/
\n———————————————————————–
\n* MB\/s = 1,000,000 bytes\/s [SATA\/600 = 600,000,000 bytes\/s]
\n* KB = 1000 bytes, KiB = 1024 bytes<\/p>\n

Sequential Read (Q= 32,T= 1) : 87.041 MB\/s
\nSequential Write (Q= 32,T= 1) : 61.630 MB\/s
\nRandom Read 4KiB (Q= 32,T= 1) : 1.862 MB\/s [ 454.6 IOPS]
\nRandom Write 4KiB (Q= 32,T= 1) : 2.187 MB\/s [ 533.9 IOPS]
\nSequential Read (T= 1) : 60.815 MB\/s
\nSequential Write (T= 1) : 61.664 MB\/s
\nRandom Read 4KiB (Q= 1,T= 1) : 0.856 MB\/s [ 209.0 IOPS]
\nRandom Write 4KiB (Q= 1,T= 1) : 2.107 MB\/s [ 514.4 IOPS]<\/p>\n

Test : 1024 MiB [C: 66.0% (393.4\/596.1 GiB)] (x5) [Interval=5 sec]
\nDate : 2017\/10\/10 21:30:17
\nOS : Windows 7 Home Premium SP1 [6.1 Build 7601] (x64)<\/p>\n

 <\/p>\n

Both of these drives are showing a really poor performance which makes me start to wonder if there is something wrong with Windows 7 and\/or the hard drive drivers.   Any suggestions where to go from here?<\/p>\n","protected":false},"excerpt":{"rendered":"

I’ve been trying to sort out why my Plex media server hangs occasionally or takes a while to load content. One of my suspicions was the access time to the hard drive with the media. It was an external hard drive on a shared USB bus. I just recently moved it off of that to […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[251,252,165,253,76],"class_list":["post-1792","post","type-post","status-publish","format-standard","hentry","category-tech-talk","tag-crystaldiskmark","tag-hard-drive","tag-plex","tag-speed-test","tag-usb"],"_links":{"self":[{"href":"https:\/\/bt.beerprojects.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1792","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bt.beerprojects.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bt.beerprojects.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bt.beerprojects.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/bt.beerprojects.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1792"}],"version-history":[{"count":4,"href":"https:\/\/bt.beerprojects.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1792\/revisions"}],"predecessor-version":[{"id":1803,"href":"https:\/\/bt.beerprojects.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1792\/revisions\/1803"}],"wp:attachment":[{"href":"https:\/\/bt.beerprojects.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1792"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bt.beerprojects.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1792"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bt.beerprojects.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}