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If Your Storage Array Runs on 10TB Drives, Here Is the Migration That Doubles Capacity Without Adding a Single Drive Slot
A 12-bay server with 10TB drives yields 120 TB raw. The same server with 20TB Toshiba MG10 drives yields 240 TB raw — double the capacity, same drive count, same SAS ports, same power budget. No JBOD, no expander, no additional rack space.
Migration Checklist: 10TB to 20TB
- Verify RAID controller firmware supports 20TB+ drives. PERC H730/H740/H750/H755/H965i all support 20TB with firmware from 2022 onward. LSI 93xx/94xx/96xx require v16.00.00.00 or later.
- Plan for rebuild time. A 20TB RAID 6 rebuild takes 28-32 hours at 200 MB/s. Schedule during a maintenance window.
- Replace one drive at a time or build a new array. For production, build a new RAID 10 array with 20TB drives and migrate VMs via storage migration.
- Expand the filesystem after adding capacity. Installing drives does not automatically expand the datastore or volume.
- Keep 2 cold-spare 20TB drives on hand. A failure during a 30-hour rebuild is low-probability but high-consequence.
技術仕様
| パラメータ | 仕様 |
|---|---|
| 容量 | 20結核 (また: 16結核, 18結核) |
| フォームファクタ | 3.5-インチ LFF |
| インタフェース | SAS 12Gb/秒 |
| 回転速度 | 7,200 RPM |
| Recording Technology | CMR with Flux-Controlled MAMR |
| Cache Buffer | 512 MB |
| Sustained Transfer Rate | まで 270 MB/s |
| Average Latency | 4.17 ms |
| MTBF | 2,500,000 時間 |
| AFR | 0.35 percent (design target) |
| Workload Rate Limit | 550 TB/year |
| URE Rate | 1 sector per 10^15 bits |
| 力 (Idle/Operating/Spin-Up) | 4.2W / 7.2W / 22W |
| Sealing | Helium-sealed (6th gen) |
| セクタサイズ | 512e or 4Kn |
| ショック (Operating/Non-Op) | 70G / 300G |
| Physical | 147.0 バツ 101.85 バツ 26.1 んん, 670g |
| 温度 | 5C to 60C |
| 保証 | 5-year (メーカー) |
MG10 vs Exos X24 vs Ultrastar HC570
| 特徴 | MG10 20TB | Exos X24 24TB | HC570 22TB |
|---|---|---|---|
| 容量 | 20結核 | 24結核 | 22結核 |
| Recording Tech | FC-MAMR | TDMR+CMR | ePMR+OptiNAND |
| Transfer Rate | 270 MB/s | 270 MB/s | 265 MB/s |
| Idle Power | 4.2W | 5.2W | 5.6W |
| MTBF | 2.5M hours | 2.5M hours | 2.5M hours |
| Best for | Lowest idle power | Highest capacity | Mixed workloads |
| Price | 100 percent | ~115 percent | ~110 percent |
互換性のあるプラットフォーム
All Dell PowerEdge with 3.5-inch SAS backplanes, xFusion V7, Lenovo Thinksystem. PERC H730/H740/H750/H755/H965i. LSI/Broadcom 93xx/94xx/96xx.
新川経由のソース
Factory-direct pricing, 3-年保証, global shipping. Volume discounts for 20 plus drives.
