Day 0: The Storage Array Is at 92 Percent. Procurement Approves the PO.
الاثنين, 09:00. The monitoring dashboard shows your VMware datastore at 92 percent capacity. Growth rate is 2 percent per week. You have four weeks before the array hits 100 percent. The PO for additional storage is approved by 14:00. The drives need to be in the rack and serving data by Friday.
Day 1: Solidigm P5520 7.68TB drives arrive. These are PCIe 4.0 NVMe read-intensive SSDs rated at 1 DWPD with 144-layer 3D NAND. For a VMware datastore that is 80 percent reads, read-intensive is exactly the right endurance tier.
Day 2: Drives installed. غارة 10 configured across 8 محركات. 30.7 TB usable. vMotion migration begins at 2.4 جيجابايت/ثانية.
Day 3: Migration complete. Datastore utilization drops from 92 ل 58 percent. Latency at 82 microseconds. No incident ticket was filed.
المواصفات الفنية
| معامل | تخصيص |
|---|---|
| سعة | 7.68تيرابايت (also: 1.92تيرابايت, 3.84تيرابايت, 15.36تيرابايت) |
| عامل الشكل | 2.5-inch U.2 (15مم) |
| Interface | PCIe 4.0 x4, NVME 1.4 |
| NAND Type | Solidigm 144-layer 3D TLC |
| Sequential Read (128K) | يصل إلى 7,000 ميغابايت/ق |
| Sequential Write (128K) | يصل إلى 4,200 ميغابايت/ق |
| Random Read (4K, QD256) | Up to 1,000K IOPS |
| Random Write (4K, QD256) | Up to 130K IOPS |
| Latency (4K Random Read, QD1) | ~82 microseconds |
| Latency (4K Random Write, QD1) | ~15 microseconds |
| Endurance | 1 DWPD (5 years), 14,016 TBW |
| MTBF | 2,000,000 ساعات |
| قوة (Idle / Active) | 5دبليو / 18دبليو |
| Power Loss Protection | Capacitor-backed |
| حماية | TCG Opal 2.0, SED, فايبس 140-2, secure erase |
| Temperature | 0C to 70C |
| ضمان | 5-year (manufacturer) |
P5520 vs P5620
| ميزة | P5520 | P5620 |
|---|---|---|
| Endurance | 1 DWPD | 3 DWPD |
| Random Write IOPS | 130K | 290K |
| Write Latency | 15 us | 11 us |
| Best for | CDN, streaming, VMware, boot | OLTP logging, التخزين المؤقت, tempdb |
| Price | 100% | ~130% |
Three Rules for Read-Intensive SSDs
1. Monitor actual DWPD. At 0.2 DWPD, the drive outlasts its warranty 5x. At 0.9 DWPD, it hits its limit in 5.5 years. Use iDRAC/iBMC telemetry.
2. غارة 10 for virtualization, غارة 5 for read-mostly. VMware hosts benefit from RAID 10 write speed. CDN nodes at 90 percent reads can use RAID 5.
3. Over-provisioning is built in. Format at full capacity. Factory over-provisioning handles wear leveling.
Compatible Platforms
U.2 NVMe. Dell R660/R760/R770/R860/R960, xFusion V7, Lenovo V3/V4. PERC H755N/H965i.
Source Through Xincuan
Factory-direct pricing, 3-year warranty, global shipping.
