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 ميغابايت/ق. 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.
المواصفات الفنية
| معامل | تخصيص |
|---|---|
| سعة | 20تيرابايت (also: 16تيرابايت, 18تيرابايت) |
| عامل الشكل | 3.5-بوصة LFF |
| Interface | SAS 12 جيجابت / ثانية |
| سرعة الدوران | 7,200 RPM |
| Recording Technology | CMR with Flux-Controlled MAMR |
| Cache Buffer | 512 MB |
| Sustained Transfer Rate | يصل إلى 270 ميغابايت/ق |
| Average Latency | 4.17 ms |
| MTBF | 2,500,000 ساعات |
| AFR | 0.35 percent (design target) |
| Workload Rate Limit | 550 TB/year |
| URE Rate | 1 sector per 10^15 bits |
| قوة (Idle/Operating/Spin-Up) | 4.2دبليو / 7.2دبليو / 22دبليو |
| Sealing | Helium-sealed (6th gen) |
| Sector Size | 512e or 4Kn |
| Shock (Operating/Non-Op) | 70جي / 300جي |
| Physical | 147.0 x 101.85 x 26.1 مم, 670g |
| Temperature | 5C to 60C |
| ضمان | 5-year (manufacturer) |
MG10 vs Exos X24 vs Ultrastar HC570
| ميزة | MG10 20TB | Exos X24 24TB | HC570 22TB |
|---|---|---|---|
| سعة | 20تيرابايت | 24تيرابايت | 22تيرابايت |
| Recording Tech | FC-MAMR | TDMR+CMR | ePMR+OptiNAND |
| Transfer Rate | 270 ميغابايت/ق | 270 ميغابايت/ق | 265 ميغابايت/ق |
| Idle Power | 4.2دبليو | 5.2دبليو | 5.6دبليو |
| 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 |
Compatible Platforms
All Dell PowerEdge with 3.5-inch SAS backplanes, xFusion V7, Lenovo ThinkSystem. PERC H730/H740/H750/H755/H965i. LSI/Broadcom 93xx/94xx/96xx.
Source Through Xincuan
Factory-direct pricing, 3-year warranty, global shipping. Volume discounts for 20 plus drives.
