Best Hard Drive 2014

• HGST Deskstar 7K2000 HDS722020ALA330 (Ebay $50)(Amazon $70) (Newegg $140) (Power Idle 7.5W)

• Raid 5 - 3 Drives → 4TB → 22.5W
• Raid 5 - 4 Drives → 6TB → 30W

1. are iSCSI targets connected on bootup (Windows):

   **yes**

2. are iSCSI targets connected on bootup (Ubuntu): yes, is seems initiator is able to reconnect even after a target restart
3. can you grow iSCSI targets as normal files
4. can you grow iSCSI targets as ZFS volumes: yes, (zfs set volsize=2g <POOL>/<DATASET>)
5. Is there a write gain for 4 drive raid 5: yes
6. What is the performance hit for parity calculations: very small, active cpu usage is less than 2%, local throughput at 4 drives is 200MB/s, iSCSI access is at 125MB/s or 1000mb/s
7. what is the added latency of ethernet/tcp transmissions: 0.1ms - 0.2ms