新川サーバー | エンタープライズ サーバー ハードウェア サプライヤー
Day 0: The Storage Array Is at 92 Percent. Procurement Approves the PO.
月曜日, 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. レイド 10 configured across 8 ドライブ. 30.7 TB usable. vMotion migration begins at 2.4 GB/s.
Day 3: Migration complete. Datastore utilization drops from 92 に 58 percent. Latency at 82 microseconds. No incident ticket was filed.
技術仕様
| パラメータ | 仕様 |
|---|---|
| 容量 | 7.68結核 (また: 1.92結核, 3.84結核, 15.36結核) |
| フォームファクタ | 2.5-インチ U.2 (15んん) |
| インタフェース | PCIe 4.0 x4, NVMe 1.4 |
| NAND型 | Solidigm 144-layer 3D TLC |
| シーケンシャルリード (128K) | まで 7,000 MB/s |
| シーケンシャルライト (128K) | まで 4,200 MB/s |
| ランダム読み取り (4K, QD256) | Up to 1,000K IOPS |
| ランダム書き込み (4K, QD256) | Up to 130K IOPS |
| Latency (4K Random Read, QD1) | ~82 microseconds |
| Latency (4K Random Write, QD1) | ~15 microseconds |
| 持久力 | 1 DWPD (5 年), 14,016 TBW |
| MTBF | 2,000,000 時間 |
| 力 (アイドル状態 / アクティブ) | 5W / 18W |
| 停電保護 | Capacitor-backed |
| 安全 | TCG オパール 2.0, SED, FIPS 140-2, secure erase |
| 温度 | 0C to 70C |
| 保証 | 5-year (メーカー) |
P5520 vs P5620
| 特徴 | P5520 | P5620 |
|---|---|---|
| 持久力 | 1 DWPD | 3 DWPD |
| ランダム書き込み IOPS | 130K | 290K |
| Write Latency | 15 us | 11 us |
| Best for | CDN, streaming, ヴイエムウェア, boot | OLTP logging, キャッシング, 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 年. Use iDRAC/iBMC telemetry.
2. レイド 10 for virtualization, レイド 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.
互換性のあるプラットフォーム
U.2 NVMe. Dell R660/R760/R770/R860/R960, xFusion V7, Lenovo V3/V4. PERC H755N/H965i.
新川経由のソース
Factory-direct pricing, 3-年保証, global shipping.
