parity2 (c1, c2, c3) Stripe-1 Stripe-2 N1 N2 N3 N4 N5 c1:block1 EC Write: Partial Stripe with Padding ReplicaIndex-1 EC Container Group : 1 Filled by previous file blocks Filled by previous file c1:blockn c1:blockn c1:block2 c1:block2 c1:blockn c1:blockn c1:blockn Padding Buffer 0000000 0000000 0000000 0000….. Client uses padding data for generating parity chunks if stripe is not full 1MB Partial Stripe: chunk2 and chunk 3 assumed as padding data and len is 1MB. Partial Stripe: chunk3 assumed as padding data and len is 1MB. Full Stripe: No padding needed. EC Write: Striping ➢ If stripe