How we tested the Huawei OceanStor Dorado 18000 V6 High-End array in battle

“Not a storage system, but a Formula 1 car,” I thought when I saw the announcement of a new top-end array from Huawei. And also with skepticism: "Let's see how this supercar will show itself on the track." And so I was lucky to "run in" the Huawei OceanStor Dorado 18000 V6, loading it with synthetic and applied tests. I share the results obtained. At the same time, it turned out to go through an unplanned quest in search of a parameter, which at first noticeably spoiled the picture of performance on AIX. So, under cat.

The strength of the Dorado

Compact and powerful as a James Bond grenade pen, the OceanStor Dorado 18000 V6 storage system fits in four units, excluding disk shelves. For our tests, we got a four-controller system with four disk shelves, in which 60 1.92 TB NVMe Palm-Size drives are installed.

, , «» 1,5 IOPS 70R/30W 8K, 100% random, 0% read Cache Hit.

. 100Gb RDMA , .. . — 32, .

Fig. 1. Triple cache mirroring. — . 1. -.

Dorado 18000 V6 . . , : , . .

, , .

Dorado 18000 V6 AIX 16 Gb Fibre Channel, SAN Brocade GEN5 16 Gb. LPAR Oracle. Vdbench.

«»

, — 5.2:1. 85 , Dorado V6.

, 3.5:1, Dorado V6 .

Fig. 2. Indicators of the efficiency of data storage after placing a copy of the DBMS. — . 2. .

— . , . Huawei Dorado V6 6% , «» All-Flash High-End . , . - - .

. , Huawei Dorado V6 80%.

(Qualification)

Dorado 18000 V6 NVMe, — Dorado 3000 V6 SAS Dorado 5000 V6 NVMe. :

Fig. 3. Summary test results. — . 3. .

:

Random – 65R/35W 8K, 100% random;
Sequential – 256K, 100% write;
1 Like – , 40KB random read, 24KB random write (90R/10W);
2 Like — , 115KB random Read, 72KB random write (70R/30W);
Vmware Like , 86KB random read, 11KB random write (46R/54W).

. RAID6. . . , CPU .

, . LPAR 16 FC, - 6 / .

Huawei Taishan 2000 (Model 2280) ARM. FC 16 Gb, — . 10 FC :

#1, AIX 7.2, 4 x FC 16Gb, 16 x LUN 500GB, RAID6;
#2, CentOS 7.6, 2 x FC 16Gb, 16 x LUN 500GB, RAID6;
#3, CentOS 7.6, 4 x FC 16Gb, 16 x LUN 500GB, RAID6.

1,3 IOPS, 9,9 / 0,53 , . 80% CPU , 15%.

Fig. 4. Maximum performance of random access, Array view. — . 4. , Array view.

Fig. 5. Maximum performance of random access, Controller view. — . 5. , Controller view.

-. Dorado V6 , -.

, . Front-End .

Vdbench 1 /. , FC .

— . Dorado 18000 V6 , Back-End Front-End -.

, , , , MPIO .

Dorado 18000 V6 . , Front-End . .. . Back-End .

Fig. 6. Topology of Dorado 18000 V6 in normal operation. — . 6. Dorado 18000 V6 .

Fig. 7. Dorado 18000 V6 topology when three controllers fail. — . 7. Dorado 18000 V6 .

, , .

Fig. 8. Load on four controllers in normal mode. — . 8. .

Fig. 9. Load balancing after failure of two out of four controllers. — . 9. .

Fig. 10. Load balancing after failure of three controllers out of four. — . 10. .

«»

. Dorado V6 RAID , . Dorado , . RAID-TP, RAID6 .

60 1,92 TB RAID6. Vdbench — 140 000 IOPS, 65R/35W 8K, 1,1 /. 1,92 TB 69 . .

60 1,92 TB RAID-TP. 28 .

Fig. 11. Latency jump when one disk fails. — . 11. .

, — . AIX 7.1 Dorado 5000 V6, , .

Dorado 18000 V6 , Dorado 5000 V6! , . AIX - LUN, ! 80 . IOPS .

Fig. 12. Unexpected abnormal performance failure :( — . 12. :(

— AIX 7.2 : 18000 V6 , . , Linux Vmware — . AIX 7.1, , , AIX OS. IBM AIX Performance Management Guide .

, Huawei . , ODM- Huawei .

IBM. AIX. «» perfpmr , : FC , , HBA, LUN, -, - OS, Java, , xdisk, ndisk, dd. SAN, , .

«» . AIX 7.1 «» , spec_accessupdate. , AIX Performance Management Guide , Help- . , AIX 7.1 AIX 7.2 :

Purpose: Indicates for devices how timestamp changes are reflected.Values:

0 is standards-compliant behavior (default in AIX 7.1)
1 indicates access and update times are not changed
2 indicates lazy access/update changes (default in AIX 7.2)

spec_accessupdate=2, - AIX 7.1 .

ioo -p -o spec_accessupdate=2

Oracle ASM «» , spec_accessupdate AIX 7.1 .

?

Huawei, , . Dorado V6 . , . Dorado V6 — Device Manager . . SNMP. , Dorado V6 — «» . Dorado V6 .

Dorado V6. Huawei Smart Kit. . Dorado V6 Device Manager.

Dorado V6. . High-Availability RPO=0, Disaster Recovery . - . Redirect-On-Write, . Business Continuity Manager (eReplication Suite) .

Huawei eDesigner SCT. : Dorado V6 . , . Huawei OceanStor eStor. eService support.eservice.huawei.com/#/Welcome.

, – 6% . . -, CPU Power. , -, SLA . .

P.S. Dorado V6 . NVMe over Fabrics: NVMe over RoCE, NVMe over FC. Dorado V6, 5000, . .

, - « »

All Articles