[Seagate] ST8000DM004×4台の速度計測 [8TB]

(2020年7月)

NETGEARのNASであるReadyNAS 214(RN214)に組み込む前に、ST8000DM004(8TB)×4台の速度計測を行った。

環境(2020年7月)

・CPU：Core i7-6700(Skylake)
・M/B：H170M Pro4(ASRock)
・RAM：32GB(8GB×2枚＋8GB×2枚)
・GPU：GeForce GTX 1660 Ti AERO ITX 6G(MSI)
・SSD：SDSSDXPM2-500G-J25(500GB,M.2,SanDisk)
・モニター：EB321HQUBbmidphx(31.5型,WQHD,Acer)
・電源：MPX-7501-AMAAB-JP(750W,CoolerMaster)
・OS：Windows10 Pro(64bit)

初期化とフォーマット

初期化：GPT(GUIDパーテーションテーブル)

フォーマット：NTFS(NT File System)

速度計測結果

ST8000DM004①

ST8000DM004②

ST8000DM004③

ST8000DM004④

まとめ

テキスト一覧

——————————————————————————
CrystalDiskMark 7.0.0 x64 (C) 2007-2019 hiyohiyo
Crystal Dew World: https://crystalmark.info/
——————————————————————————
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

[Read]
Sequential 1MiB (Q= 8, T= 1): 189.372 MB/s [ 180.6 IOPS] 44071.87 us>
Sequential 1MiB (Q= 1, T= 1): 188.542 MB/s [ 179.8 IOPS] 5554.51 us>
Random 4KiB (Q= 32, T=16): 1.946 MB/s [ 475.1 IOPS] 457892.82 us>
Random 4KiB (Q= 1, T= 1): 0.621 MB/s [ 151.6 IOPS] 6576.68 us>

[Write]
Sequential 1MiB (Q= 8, T= 1): 179.332 MB/s [ 171.0 IOPS] 46473.80 us>
Sequential 1MiB (Q= 1, T= 1): 181.575 MB/s [ 173.2 IOPS] 5765.66 us>
Random 4KiB (Q= 32, T=16): 1.603 MB/s [ 391.4 IOPS] 474299.25 us>
Random 4KiB (Q= 1, T= 1): 1.609 MB/s [ 392.8 IOPS] 2476.74 us>

Profile: Default
Test: 1 GiB (x5) [Interval: 5 sec]
OS: Windows 10 Professional [10.0 Build 18363] (x64)
Comment: ST8000DM004① SATA 6Gbit/s

[Read]
Sequential 1MiB (Q= 8, T= 1): 212.425 MB/s [ 202.6 IOPS] 39323.67 us>
Sequential 1MiB (Q= 1, T= 1): 211.629 MB/s [ 201.8 IOPS] 4951.16 us>
Random 4KiB (Q= 32, T=16): 1.897 MB/s [ 463.1 IOPS] 459873.91 us>
Random 4KiB (Q= 1, T= 1): 0.626 MB/s [ 152.8 IOPS] 6529.54 us>

[Write]
Sequential 1MiB (Q= 8, T= 1): 199.026 MB/s [ 189.8 IOPS] 41899.45 us>
Sequential 1MiB (Q= 1, T= 1): 201.136 MB/s [ 191.8 IOPS] 5207.48 us>
Random 4KiB (Q= 32, T=16): 1.607 MB/s [ 392.3 IOPS] 495421.25 us>
Random 4KiB (Q= 1, T= 1): 1.611 MB/s [ 393.3 IOPS] 2537.95 us>

Profile: Default
Test: 1 GiB (x5) [Interval: 5 sec]
OS: Windows 10 Professional [10.0 Build 18363] (x64)
Comment: ST8000DM004② SATA 6Gbit/s

[Read]
Sequential 1MiB (Q= 8, T= 1): 196.930 MB/s [ 187.8 IOPS] 42380.36 us>
Sequential 1MiB (Q= 1, T= 1): 197.142 MB/s [ 188.0 IOPS] 5313.40 us>
Random 4KiB (Q= 32, T=16): 1.920 MB/s [ 468.8 IOPS] 453653.90 us>
Random 4KiB (Q= 1, T= 1): 0.607 MB/s [ 148.2 IOPS] 6727.59 us>

[Write]
Sequential 1MiB (Q= 8, T= 1): 186.869 MB/s [ 178.2 IOPS] 44599.90 us>
Sequential 1MiB (Q= 1, T= 1): 192.761 MB/s [ 183.8 IOPS] 5431.89 us>
Random 4KiB (Q= 32, T=16): 1.630 MB/s [ 397.9 IOPS] 487548.96 us>
Random 4KiB (Q= 1, T= 1): 1.688 MB/s [ 412.1 IOPS] 2397.80 us>

Profile: Default
Test: 1 GiB (x5) [Interval: 5 sec]
OS: Windows 10 Professional [10.0 Build 18363] (x64)
Comment: ST8000DM004③ SATA 6Gbit/s

[Read]
Sequential 1MiB (Q= 8, T= 1): 196.528 MB/s [ 187.4 IOPS] 42491.80 us>
Sequential 1MiB (Q= 1, T= 1): 195.657 MB/s [ 186.6 IOPS] 5354.74 us>
Random 4KiB (Q= 32, T=16): 1.921 MB/s [ 469.0 IOPS] 455903.01 us>
Random 4KiB (Q= 1, T= 1): 0.619 MB/s [ 151.1 IOPS] 6608.04 us>

[Write]
Sequential 1MiB (Q= 8, T= 1): 185.620 MB/s [ 177.0 IOPS] 44922.32 us>
Sequential 1MiB (Q= 1, T= 1): 182.264 MB/s [ 173.8 IOPS] 5746.76 us>
Random 4KiB (Q= 32, T=16): 1.630 MB/s [ 397.9 IOPS] 473646.36 us>
Random 4KiB (Q= 1, T= 1): 1.647 MB/s [ 402.1 IOPS] 2428.85 us>

Profile: Default
Test: 1 GiB (x5) [Interval: 5 sec]
OS: Windows 10 Professional [10.0 Build 18363] (x64)
Comment: ST8000DM004④ SATA 6Gbit/s

データ有の場合

上記4台に先行して購入し、既にデータがある(85%使用)同モデルの結果も付す。

[Read]
Sequential 1MiB (Q= 8, T= 1): 119.956 MB/s [ 114.4 IOPS] 69423.98 us>
Sequential 1MiB (Q= 1, T= 1): 116.604 MB/s [ 111.2 IOPS] 8987.77 us>
Random 4KiB (Q= 32, T=16): 0.940 MB/s [ 229.5 IOPS] 652468.74 us>
Random 4KiB (Q= 1, T= 1): 0.390 MB/s [ 95.2 IOPS] 10442.98 us>

[Write]
Sequential 1MiB (Q= 8, T= 1): 95.214 MB/s [ 90.8 IOPS] 87285.12 us>
Sequential 1MiB (Q= 1, T= 1): 101.502 MB/s [ 96.8 IOPS] 10309.27 us>
Random 4KiB (Q= 32, T=16): 9.116 MB/s [ 2225.6 IOPS] 207760.10 us>
Random 4KiB (Q= 1, T= 1): 6.089 MB/s [ 1486.6 IOPS] 671.51 us>

Profile: Default
Test: 1 GiB (x5) [Interval: 5 sec]
OS: Windows 10 Professional [10.0 Build 18363] (x64)
Comment: ST8000DM004[0] SATA 6Gbit/s

使用率が大きくなると、極端に遅くなる？

関連：49%時点での速度結果(2019年11月)

本品はSMR(Shingled Magnetic Recording,瓦磁気記録方式)なので、読み取りはCMR(Conventional Magnetic Recording)同等だが、書き込み、特にランダム書き込みは遅いようだね…

今回は、上述のようにNAS(ReadyNAS 214)用であり、1Gbps(＝125MB/s)が頭打ちなのでキニシナイかはシラン(SILANE)。